Medical Cannabis for PTSD: What the Research Shows

Post-traumatic stress disorder (PTSD) keeps the body on alarm long after the danger is gone. Studies of medical cannabis for PTSD have looked mostly at sleep, nightmares, feeling constantly on edge and anxiety. Results are mixed: some people report relief, others feel worse, and large long-term trials are still missing. Whether it fits you is a decision to make with a physician, next to proven therapies.

Written for patients and the clinicians who care for them

See if I qualify

Last updated October 9, 2026 · Medically reviewed by the Dr. Weedy medical team · Educational summary of published research, not medical advice

What Is PTSD? Symptoms and DSM-5 Criteria

PTSD is a mental health condition that can develop after a person lives through, witnesses or learns about a terrifying event: combat, assault, a serious accident, a disaster, abuse, or the sudden violent loss of someone close. Most people feel shaken for a while after trauma and slowly recover. In PTSD, the reactions do not fade. The memory keeps breaking back in, the body stays braced for danger, and life starts to shrink around avoiding reminders.

It shows up differently from person to person. One veteran wakes three times a night from the same dream; a car crash survivor cannot drive past one intersection; someone who was assaulted feels numb and cut off from people they love. PTSD is a recognized psychiatric disorder, not a character flaw or a sign of weakness, and it can begin weeks, months or even years after the event. It is common, and it is treatable.

PTSD criteria in DSM-5-TR

Clinicians in the United States diagnose PTSD using the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), published by the American Psychiatric Association ^[2]. It groups the criteria under eight letters. All eight have to be met for a diagnosis in adults.

AStressor

Exposure to actual or threatened death, serious injury or sexual violence: it happened to you, you saw it happen, you learned it happened to someone close, or you faced its details again and again at work, as first responders do.
BIntrusion

At least one: unwanted memories that push in, nightmares, flashbacks that feel like the event is happening now, or strong distress and body reactions to reminders.
CAvoidance

At least one: steering clear of thoughts and feelings about the event, or of people, places, conversations and situations that bring it back.
DNegative mood & thinking

At least two, such as blaming yourself, lasting fear, guilt or shame, losing interest in things, feeling detached from others, or being unable to feel happiness.
EArousal & reactivity

At least two: irritability or angry outbursts, reckless behavior, being on guard all the time, startling easily, trouble concentrating, or trouble sleeping.
FDuration over a month

The symptoms in B through E last longer than one month. Reactions in the first month after trauma may be called acute stress disorder instead.
GDistress or impairment

The symptoms cause real distress or get in the way of work, relationships, school or other important parts of daily life.
HNot due to a substance or illness

The symptoms are not better explained by a medicine, alcohol or another substance, or by a separate medical condition.

DSM-5-TR also lets clinicians add two notes to the diagnosis: “with dissociative symptoms,” when a person feels unreal or outside their own body, and “with delayed expression,” when the full picture appears six months or more after the event ^[2]. Children six and younger have their own, simpler set of criteria ^[2].

How PTSD is diagnosed · All conditions

How PTSD Is Diagnosed: Assessment, ICD-10 Codes and Complex PTSD

Who diagnoses PTSD and how

A PTSD diagnosis comes from a licensed clinician: a psychiatrist, psychologist, primary care physician, nurse practitioner or licensed therapist. There is no blood test or brain scan for it. The clinician asks what happened, which symptoms you have, how long they have lasted and how they affect your life, and checks for conditions that often travel with PTSD, such as depression, anxiety, sleep problems and alcohol or drug use.

Two tools come up often. The PCL-5 is a 20-item checklist you fill in yourself, rating how much each PTSD symptom bothered you in the past month; it is used to screen and to track change over time. The CAPS-5 is a structured interview, a set of standard questions a trained clinician asks you, and it is considered the most thorough way to confirm the diagnosis. Both come from the National Center for PTSD at the Department of Veterans Affairs ^[5]. A high score on a checklist is a reason to see a clinician, not a diagnosis by itself.

PTSD ICD-10 codes

Insurers, disability programs and medical records use ICD-10-CM codes. PTSD sits in the F43 group, “reaction to severe stress, and adjustment disorders,” of the 2026 code set ^[6].

PTSD codes in ICD-10-CM
Code	What it means	When it’s used
F43.10	Post-traumatic stress disorder, unspecified	PTSD is diagnosed, but the record does not say whether it is acute or chronic.
F43.11	Post-traumatic stress disorder, acute	Symptoms have lasted less than three months ^[6].
F43.12	Post-traumatic stress disorder, chronic	Symptoms have lasted three months or longer ^[6].

Your clinician assigns the code; this page does not diagnose.

PTSD vs. complex PTSD

“Complex PTSD” is a separate diagnosis in the World Health Organization’s ICD-11 ^[7]. DSM-5-TR does not list it on its own; in the United States, many of the same symptoms are recorded as PTSD, sometimes with the dissociative note.

PTSD

Where it’s defined: DSM-5-TR and ICD-11 ^[2]^[7]
Core symptoms: Reliving the event, avoiding reminders, feeling under constant threat, plus mood and thinking changes in DSM-5-TR
Typical trauma: Often a single event or a time-limited one: an assault, a crash, a deployment
What it adds: The standard diagnosis that most treatment research and state programs refer to

Complex PTSD

Where it’s defined: ICD-11 only ^[7]
Core symptoms: All core PTSD symptoms, plus lasting trouble managing emotions, a deeply negative view of yourself, and difficulty feeling close to others
Typical trauma: Prolonged or repeated trauma that was hard or impossible to escape: childhood abuse, domestic violence, captivity, trafficking
What it adds: Names the long-term effects on identity and relationships, which shape how therapy is planned

How PTSD affects memory, sleep and the brain

How PTSD Affects Memory, Sleep and the Brain

When nightmares, hypervigilance and sleepless nights don’t let go, it rarely stays “just stress.” A sound or a smell drags the memory back, the body goes on alert, you start skipping places and people to stay safe, and the night brings the event back in a dream. By morning you are exhausted, and the next reminder hits even harder. Many people describe this loop long before anyone gives it a name.

The PTSD loop

Reminder
On alert
Avoiding
Nightmares & poor sleep

and back again

Each step feeds the next. A reminder sets off the brain’s alarm system, the body floods with stress hormones, and you feel the danger again even though you are safe. Avoiding reminders brings short relief, so the brain learns that avoidance “works,” and the list of places, people and thoughts you avoid grows. Sleep becomes a battlefield: nightmares wake you, fear of nightmares keeps you up, and too little sleep leaves the alarm system even more sensitive the next day.

This is how PTSD is maintained, and it is also why it can be loosened. Therapies that safely face the memory, treatment for nightmares and sleep, and support for mood all break the loop at different points. The cards below answer the questions people most often ask about what PTSD does to the body.

Does PTSD cause memory loss?

PTSD often affects memory, though rarely as total loss. People commonly have gaps in their memory of the trauma itself, alongside unwanted memories that are painfully vivid. Day to day, poor sleep, constant alertness and depression can make it hard to concentrate and remember appointments or conversations, a fog that tends to lift as PTSD is treated.

Can PTSD cause hallucinations?

A flashback can feel so real that you see, hear or smell parts of the event, and dissociation can make the world feel unreal. These are PTSD symptoms, not psychosis. True hallucinations or fixed false beliefs unrelated to the trauma are different and need prompt assessment, especially because THC can trigger psychosis in vulnerable people.

PTSD, sleep apnea and nightmares

Trouble falling or staying asleep and recurring nightmares are among the most common PTSD symptoms. Obstructive sleep apnea, when the airway repeatedly closes during sleep, turns up often in people with PTSD, especially veterans. Loud snoring, gasping or daytime sleepiness are worth a sleep study, because treating apnea can make nights and PTSD symptoms easier.

PTSD dreams

PTSD nightmares often replay the event or its themes: being chased, trapped, unable to help. They can come several times a week and leave you afraid to fall asleep. Nightmares have their own treatments, including imagery rehearsal therapy, where you rewrite the dream while awake, and medicines a physician can prescribe.

Does PTSD cause brain damage?

PTSD is not brain damage in the sense of an injury. Brain scan studies have found changes linked to PTSD in areas that handle fear, memory and self-control: the amygdala, the hippocampus and the prefrontal cortex. Brain scans cannot diagnose PTSD, and many of these changes appear to shift with treatment. A head injury, common in military service, is a separate condition that can coexist with PTSD.

PTSD, anxiety and panic attacks

Anxiety is built into PTSD: constant watchfulness, startling easily and feeling tense are part of the diagnosis. Many people also have panic attacks, sudden waves of racing heart, shortness of breath and fear, often set off by reminders. PTSD can also travel with depression, obsessive-compulsive symptoms and anger problems, which a clinician will look for.

PTSD and migraines

Headaches and migraines are more common in people with PTSD, and stress, poor sleep and muscle tension can set them off. A long period on high alert also strains the rest of the body; people with PTSD report more high blood pressure, digestive trouble such as irritable bowel symptoms, and chronic pain. New or changing headaches deserve their own check-up rather than being put down to stress.

None of this means you are stuck. There are options worth discussing with a physician, from trauma-focused therapy to sleep care to, for some people, medical cannabis as one part of a wider plan. The next sections walk through them in order.

PTSD treatment options · Work and disability

PTSD, Work and Disability: SSA, VA, DBQ and Service Dogs

PTSD does not stay at home. Trouble sleeping, concentrating and being around crowds or sudden noises can make a regular workday exhausting, and many people wonder whether PTSD counts as a disability. The short answer is that it can, depending on how severe it is and which program is asking. This section explains the main ones without promising an outcome: each program decides case by case.

How PTSD affects work

Concentration problems, irritability, fatigue from broken sleep and reactions to triggers can all affect work. Under the Americans with Disabilities Act (ADA), PTSD can be a disability, and employers with 15 or more employees must consider reasonable accommodations, such as a quieter workspace, a flexible schedule or time off for therapy, unless they cause undue hardship ^[8].
Does PTSD count as a disability?

Social Security evaluates PTSD under its listing 12.15, “trauma- and stressor-related disorders,” looking at medical records and how much the condition limits your ability to work ^[9]. The VA rates service-connected PTSD under its general rating formula for mental disorders. Neither approval is automatic; both depend on documentation of the diagnosis and its effects.
What a PTSD DBQ is

A Disability Benefits Questionnaire (DBQ) is a VA form that records medical evidence for a disability claim ^[10]. The PTSD DBQ is completed by a psychiatrist or psychologist, usually during a VA exam. Veterans often pair it with VA Form 21-0781, a personal statement describing the event that caused PTSD.
PTSD service dogs vs. emotional support animals

Under the ADA, a service dog is individually trained to do specific tasks for a person with a disability, and psychiatric service dogs for PTSD can wake a person from nightmares or create space in a crowd ^[11]. An emotional support animal comforts by its presence but is not trained for tasks, so it does not have the same public access rights.

Support for veterans · Legal protections and privacy

When to Get Help Now and When to Book a Regular Visit

Most questions about PTSD and cannabis can wait for a calm, unhurried appointment. Some situations cannot. If anything in the left-hand card sounds like today, reach out for help first; the rest of this page will still be here.

Get help right now if…

you are thinking about suicide or about hurting yourself or someone else;
you are seeing or hearing things others do not, or feel you are losing touch with reality;
you have used alcohol, cannabis or other drugs and feel unsafe or out of control;
a flashback or panic will not settle and you cannot keep yourself safe.

Call or text 988 · veterans press 1

In immediate danger, call 911 or go to the nearest emergency room.

Book a regular visit if…

nightmares, poor sleep or feeling on edge have lasted more than a month;
you are avoiding places, people or tasks you used to handle;
your current treatment helps only partly and you want to talk through options;
you already use cannabis to cope and want to know whether it is helping or hurting;
you want to know whether PTSD qualifies for a medical card in your state.

An online appointment is not emergency care. It is a private, one-on-one conversation for questions that can wait a day.

Talk to a licensed physician

PTSD Treatment Options: Where Cannabis Fits

PTSD is treatable, and the best-studied treatments are talk therapies that help the brain file the trauma as a memory instead of a live threat. Medicines can help too, especially for sleep and mood. Medical cannabis is not a first-line treatment for PTSD; it is something some patients discuss with a physician alongside standard care, usually when sleep, nightmares or tension still get in the way. Here is how the options compare, based on the VA/DoD clinical practice guideline ^[12] and the American Psychological Association guideline ^[13].

How PTSD is treated
Treatment	What it is	Where guidelines place it	Worth knowing
Cognitive processing therapy (CPT)	About 12 sessions of learning to spot and rework stuck beliefs about the trauma, such as “it was my fault” ^[14]	Recommended first-line psychotherapy	Available at VA centers and from many private therapists; can be done online
Prolonged exposure (PE)	Gradually and safely revisiting the memory and avoided situations until they lose their power	Recommended first-line psychotherapy	Feels harder before it feels better; the therapist sets the pace with you
EMDR therapy	Eye movement desensitization and reprocessing: recalling the trauma while following side-to-side movements or taps	Recommended first-line psychotherapy	Less homework than CPT or PE; look for an EMDR-trained clinician
SSRIs and SNRIs	Antidepressants such as sertraline, paroxetine, fluoxetine and venlafaxine	Recommended medicines, especially when therapy is not available or not preferred	Take several weeks to work; stopping suddenly causes withdrawal symptoms
Prazosin for nightmares	A blood pressure medicine taken at night that blunts the stress hormone noradrenaline	Guidelines differ; considered for nightmares by some, not for PTSD as a whole	Can cause dizziness when standing up; a physician adjusts the dose
Medical cannabis	THC, CBD or both, from a state program with a physician’s recommendation	Not a first-line treatment; the VA/DoD guideline advises against cannabis as a PTSD treatment because evidence is limited and harms are possible	Studied mostly for sleep, nightmares and tension; can interact with medicines and may worsen symptoms for some people

PTSD decision aid

If you are weighing options, the National Center for PTSD offers a free PTSD Treatment Decision Aid ^[14]. It walks through the recommended therapies and medicines in plain language and lets you compare them side by side and save your choices to bring to an appointment. It does not cover cannabis, which is exactly why it is useful: it shows you what a physician will likely suggest first, so you can ask where cannabis fits in that picture.

PTSD coping skills

Small daily tools can make the loop easier to interrupt. Grounding, such as naming five things you can see, four you can hear and three you can touch, brings attention back to the present during a flashback. Slow breathing with a longer exhale calms the body’s alarm. A steady sleep routine, little caffeine after noon and limited alcohol help nights more than most people expect. Telling one trusted person what your triggers are makes bad days less lonely. None of these replace treatment, and all of them make treatment work better.

How cannabis works in the body · Medical cannabis and anxiety · Medical cannabis and insomnia

How Cannabis Works in the Body: The Endocannabinoid System and Fear

Your body makes its own cannabis-like chemicals, called endocannabinoids. The best known is anandamide. They act on two main receptors: CB1, found mostly in the brain and nerves, and CB2, found mostly in immune cells. Together these make up the endocannabinoid system (ECS), which helps regulate mood, memory, sleep and the stress response, including the way the brain learns that something once dangerous is now safe. That process, called fear extinction, is exactly what seems to stall in PTSD.

THC from cannabis switches on CB1 receptors directly and is what causes the “high.” CBD works differently: it does not strongly activate CB1, acts on serotonin receptors, and may slow the breakdown of the body’s own anandamide ^[1]. Because PTSD involves fear learning and stress control, researchers have proposed that some people with PTSD may have a less active endocannabinoid system and that cannabinoids could help restore it. That is a hypothesis. A mechanism explains why something is worth testing; it does not show that it works.

Fear extinction

A randomized, placebo-controlled lab study gave adults oral THC or placebo and measured how well they recalled a “safe” memory learned in the lab; the effect depended on the dose ^[15]. In a human lab study
REM sleep and nightmares

THC is thought to shorten REM sleep, the stage when most vivid dreams happen, one proposed reason some people report fewer nightmares. A daily-diary study of veterans found that cannabis, sleep and PTSD symptoms moved together in complex ways, sometimes easing and sometimes feeding the problem ^[16]. Observational
Stress response

CBD acts on serotonin 5-HT1A and CB1 receptors in brain circuits that handle stress. Yet when a randomized trial tested CBD on emotional reactions to trauma reminders in trauma-exposed adults, it did not find a clear effect over placebo ^[17]. In a human lab study
Anandamide in PTSD

CBD appears to raise levels of the body’s own anandamide, and plant cannabinoids act on cannabinoid receptors far more strongly than the body’s own chemicals do, which can disrupt normal endocannabinoid signaling ^[1]. Review of mechanisms

What research shows

Can Medical Cannabis Help PTSD? What Research Shows

The honest answer is: maybe for some people, for some symptoms, and the evidence is still thin. Research on cannabis and PTSD falls into two very different groups. Randomized controlled trials give people cannabis, CBD or THC, or a placebo, and compare results; they can show cause and effect, but the PTSD trials so far are small and short. Observational studies follow people who already use cannabis; they include far more people and show what happens in real life, but they cannot prove that cannabis caused the change. One often-cited PTSD trial, a family therapy study for teenagers with PTSD and substance use, tested therapy, not cannabinoids ^[19], so it says nothing about whether cannabis helps PTSD.

What kinds of studies looked at cannabis and PTSD?

How to read it: each bar shows the share of studies of that kind among the studies on cannabis and PTSD we reviewed for this article, counted per hundred. Stronger designs are at the top, and each row cites examples of that kind of study.

Systematic reviews & meta-analyses [?]^[20]6 in 100

Randomized & controlled trials ^[18]^[17]11 in 100

Observational studies (cohort, case-control, cross-sectional, surveys) ^[21]^[22]44 in 100

Case reports [?]6 in 100

Lab & animal studies [?][?]8 in 100

Narrative reviews & guidelines ^[23]25 in 100

Only a small share of the studies are trials or pooled reviews ^[18][?]; most of what we know comes from observing people who already use cannabis ^[21], not from testing cannabis against a placebo.

Show as a table

Kinds of studies on cannabis and PTSD, per hundred studies reviewed
Kind of study	Studies per hundred
Systematic reviews & meta-analyses	6 [?]^[20]
Randomized & controlled trials	11 ^[18]^[17]
Observational studies (cohort, case-control, cross-sectional, surveys)	44 ^[21]^[22]
Case reports	6 [?]
Lab & animal studies	8 [?][?]
Narrative reviews & guidelines	25 ^[23]

Find studies by type

Pick a study type to see what those studies looked at. Trials test a product against a placebo; observational studies follow people who already use cannabis.

Showing 14 of 14 studies

Randomized trial · 2026

CBD for people with alcohol use disorder, with and without PTSD

Two placebo-controlled trials of oral CBD in 54 patients found it was tolerated but showed no evidence that it reduced drinking ^[18].
Randomized lab study · 2026

Single doses of THC and the memory that something is safe

A double-blind trial found THC’s effect on recalling a learned “safe” memory and on fear coming back depended on the dose ^[15].
Randomized lab study · 2024

CBD and emotional reactions to trauma reminders

One dose and one week of CBD in trauma-exposed adults did not clearly reduce emotional reactivity compared with placebo ^[17].
Meta-analysis · 2024

Does using cannabis get in the way of trauma-focused therapy?

Pooling individual patient data from several trials, trauma-focused therapy reduced PTSD severity more than other therapy (difference 0.26, likely range 0.04–0.48), whether or not people used cannabis ^[20].
Review protocol · 2025

Plan for a large review of cannabinoids in mental health

Describes how researchers will pool trials of plant and prescription cannabinoids across mental health conditions; results are not out yet ^[1]. Background: no results yet
Registry cohort · 2025

UK patients prescribed cannabis for PTSD

Patients in a national registry reported improvement in PTSD symptom scores over time; men were less likely to improve than women ^[21]. There was no comparison group.
Daily diary cohort · 2026

Seeking relief or fueling the fire?

Tracking 74 veterans day by day, researchers found cannabis linked to relief on some days and to more stress and worse sleep on others ^[16].
Pilot cohort · 2025

Tracking PTSD and cannabis with phones and wearables

Of 75 recently discharged veterans, 91.9% provided passive sensor data and 72% stayed in the study at three months, showing remote tracking is workable ^[24].
Cross-sectional · 2024

Severe PTSD symptoms and problem drinking or cannabis use

In a large multi-ethnic Dutch cohort, adults with severe PTSD symptoms had problematic cannabis use and problematic alcohol use more often ^[22].
Long-term cohort · 2025

PTSD two decades after treatment for heroin dependence

People with PTSD in this Australian follow-up had more cannabis dependence, depression and past suicide attempts ^[25]. Background: not a cannabis treatment study
Cohort · 2025

Sleep before trauma and drinking or cannabis use after it

In emergency room patients after trauma, insomnia before the event predicted more alcohol and cannabis use afterward ^[26]. Background: not a cannabis treatment study
Survey · 2022

More cannabis during the pandemic and mood in PTSD

Among people with PTSD, those who increased cannabis use during COVID-19 more often reported clinically meaningful worsening of depression ^[27].
Randomized trial · 2024

Ongoing substance use during PTSD treatment

In veterans treated for PTSD and substance use together, drinking days tracked with PTSD symptoms at the same time ^[28]. Background: not a cannabis treatment study
Randomized trial · 2020

Family therapy for teens with PTSD and substance use

Exposure-based family therapy cut substance-using days and cannabis use compared with usual care in 124 adolescents ^[19]. Background: not a cannabis treatment study

Symptom by symptom: what has been studied

PTSD is not one symptom, and research does not treat it as one. Here is what studies looked at for each problem people bring to an appointment, and how strong that evidence is. Where there is little direct evidence, the table says so.

Symptom management profile
Symptom	What was studied	Type of data	What it means
Nightmares and sleep	Day-to-day links between cannabis, sleep and PTSD symptoms in veterans ^[16]; prescription nabilone for nightmares, discussed in a clinical review ^[23]	Observational; review	The most-studied hope. Short-term relief was reported, but so was later worsening of sleep and stress.
Overall PTSD symptoms	Registry of patients prescribed cannabis ^[21]; randomized trials of CBD ^[18]	Observational; randomized trials	Registry patients reported improvement; the CBD trials found it tolerated but showed no evidence of benefit on their main outcome.
Fear and feeling on edge	THC and recall of a learned “safe” memory ^[15]	Human lab study	A lab measure of fear learning, not relief in daily life. Effects depended on the dose.
Anxiety around trauma reminders	CBD and emotional reactivity ^[17]	Human lab study	No clear effect over placebo.
Depression alongside PTSD	Changes in cannabis use during the pandemic ^[27]	Survey	More cannabis went with more worsening of depression, not less.
Drinking alongside PTSD	CBD versus placebo in alcohol use disorder ^[18]	Randomized trials	No clear change in drinks per day (difference −0.36, likely range −1.83 to 1.11) ^[18].
Intrusive memories and avoidance	Little direct trial data	—	Not enough evidence to say whether cannabis helps or hurts these symptoms.

Symptom by symptom · What science doesn’t know yet

What Science Doesn’t Know Yet — and Where Data Conflict

A large share of studies on cannabis and PTSD reach no clear conclusion, and some point in opposite directions. That is not a reason to dismiss the topic; it is a reason to read every promising headline with care. These are the gaps researchers keep running into.

Small trials, big placebo effects

Trials in this area are small, which makes real effects hard to detect, and people on placebo often improve a lot too, leaving little room to show a difference ^[18].
Answers people give about themselves

Many studies rely on self-reported symptoms and cannabis use, recalled after the fact, which bends results in ways that are hard to correct ^[16].
Mostly veterans, mostly men

A large part of the research follows veterans, so results may not carry over to civilians, women or survivors of other kinds of trauma ^[16].
Relief or fuel?

The same habit can ease tension tonight and add to stress and poor sleep later. Daily tracking shows both effects in the same people, which is why the data seem to conflict ^[16].
No large long-term trials

No large randomized trial has yet followed people with PTSD on cannabis for many months, so long-term benefit, dependence and safety remain open questions.

What this means for you: the research cannot yet tell any one person whether cannabis will help their PTSD. The decision is best made with a physician who knows your symptoms, your medicines and your history, and who will check in on how it is going.

What this means for you · THC, CBD and prescription cannabinoids

THC, CBD and Prescription Cannabinoids for PTSD

“Cannabis” covers very different products. THC is the compound that causes the high; CBD does not, and it behaves differently in the body. What has been learned about one does not automatically apply to the other, and prescription cannabinoid medicines are a separate category again. Studies have not settled on a “best” THC-to-CBD ratio for PTSD, so this page does not suggest one.

What has been studied, by product
Product	What it is	What PTSD studies looked at	Watch for
THC products	Flower, vapes, edibles and tinctures where THC is the main active compound	Single doses in lab studies of fear memory, with effects that depended on the dose ^[15]	Anxiety and paranoia at higher doses, psychosis in vulnerable people, impaired driving, dependence
CBD-only products	Oils, capsules and gummies with CBD and little or no THC; no high	Randomized trials in people with alcohol use disorder with and without PTSD ^[18]; reactions to trauma reminders ^[17]	Diarrhea, sleepiness and nausea; liver enzyme changes with high oral doses; serious interactions with some medicines ^[23]
THC + CBD mixes	Products with both compounds in a stated ratio	Prescribed cannabis-based products in a national patient registry ^[21]	THC risks still apply; CBD can change how other medicines are cleared
Prescription medicines — not dispensary products
Nabilone (Cesamet)	A synthetic THC-like capsule approved by the FDA for chemotherapy nausea	Prescribed off-label for PTSD nightmares in small studies, discussed in a clinical review ^[23]	Drowsiness, tiredness, dizziness and dry mouth are common with THC-containing medicines
Dronabinol (Marinol, Syndros)	Synthetic THC approved by the FDA for chemotherapy nausea and appetite loss in AIDS	Little PTSD-specific research	Same as other THC medicines
Cannabidiol (Epidiolex)	Purified CBD approved by the FDA for certain rare seizure disorders	Not approved or specifically tested for PTSD	Liver tests and interactions, such as with clobazam ^[23]

Forms of cannabis

Forms of Cannabis and What Each Means for PTSD

Cannabis is not only smoked. People with PTSD use gummies at bedtime, drops under the tongue, vapes and creams, and each form reaches the body differently. That matters for timing, for your lungs and for safety. The table below says what each form avoids and what still applies, without ranking them: choosing a form is a conversation for your appointment.

Forms of cannabis and what each means
Form	Examples	How it acts	What it avoids	What still applies
Smoking	Joints, blunts, pipes, bongs	Smoke from burning plant material is inhaled; effects start within minutes	The delayed onset of edibles	Smoke irritates the airways and lungs; THC effects, interactions, sedation and driving risks
Vaping and dabbing	Dry-herb vaporizers, oil cartridges and pens, dabbing concentrates such as wax, shatter and rosin	Heated vapor is inhaled; effects start quickly. Concentrates can be very high in THC	Burning plant material	Hot aerosol still passes through the airways; THC effects, interactions, sedation and driving risks
Edibles, drinks, capsules	Gummies, chocolate, baked goods, beverages, capsules, oil swallowed	Swallowed and processed by the liver before reaching the blood; starts later and lasts longer than inhaling	Smoke and vapor in the airways	Late onset invites a second dose, a common cause of taking too much; liver processing, interactions, sedation, driving
Tinctures and sprays under the tongue	Oils and tinctures held under the tongue, mouth sprays	Partly absorbed through the lining of the mouth, the rest swallowed	Smoke and vapor in the airways	THC effects, interactions, sedation and driving risks; the swallowed part goes through the liver
Topicals and patches	Creams, balms, salves; transdermal patches	Creams act locally on the skin; patches deliver cannabinoids into the blood	Airways; creams also avoid most effects on the brain	Patches reach the blood, so THC effects and interactions apply; creams are rarely what people mean for PTSD
Suppositories	Rectal or vaginal suppositories	Absorbed through the lining into the blood; rarely used	Airways	THC effects, interactions, sedation and driving risks

Dosage and safety

Dosage, Administration and Safety: Start Low, Go Slow

There is no established PTSD dose of cannabis, THC or CBD. What follows describes what was used in studies, not a dose for you. In randomized trials of CBD in people with alcohol use disorder, with and without PTSD, daily oral doses went up to 1200 mg ^[18]. Lab studies of THC used single, low oral doses and found that the effect on fear memory changed with the dose ^[15], a reminder that more is not necessarily better.

Physicians who recommend cannabis usually follow the rule “start low, go slow”: a small amount, a long wait before judging the effect, and slow changes over days or weeks, with one product at a time so you can tell what is doing what. Timing matters too. Some people take cannabis only at night for sleep; others use it during the day. Your physician will consider your schedule, your job and whether you drive.

A symptom diary to bring to your appointment

Scroll the table sideways to see every column →

Symptom diary template
Date	Hours slept	Nightmares (yes / no)	On edge 0–10	Product & form	Time taken	Side effects

Copy it into your notes app or print it. Two weeks of entries give your physician far more to work with than memory alone.

Bring a list of all your medicines and supplements, including over-the-counter sleep aids.

Discuss your medicines with a physician

Cannabis and PTSD Medications: Interactions

Many people with PTSD already take an antidepressant, a sleep medicine or something for anxiety, and that is where cannabis needs the most care. THC-containing medicines commonly cause drowsiness, tiredness, dizziness and dry mouth. CBD in trials most often caused diarrhea, sleepiness and nausea, and at high doses side effects limited the dose for 22.6% of participants ^[18]. Stack these on top of a sedating medicine and the effects add up.

Smoke and vapor

Burning or heating cannabis irritates the airways, which matters if you have asthma or smoke tobacco too. Inhaling does not change drug interactions; it changes how fast the effect arrives.

Any form

Anything that reaches the blood is processed by the liver, where THC and CBD can change how other medicines are cleared. Sedation from cannabis adds to that of sleep pills, benzodiazepines, alcohol and some antidepressants.

Driving and machines

THC slows reaction time and judgment for hours, longer after edibles. Combined with sedating medicines or alcohol, the risk rises further. Driving under the influence of cannabis is illegal in every state.

Serious · warfarin

CBD can raise warfarin levels and the risk of bleeding; this is described as a clinically relevant, serious interaction ^[23].

Type of data: clinical reports, reviewed
Serious · clobazam

CBD increases the effect of the seizure medicine clobazam, which can mean more sleepiness; a serious interaction to manage with your prescriber ^[23].

Type of data: clinical reports, reviewed
Serious · ketoconazole

The antifungal ketoconazole and CBD interact in a clinically relevant, serious way, changing how the body clears cannabinoids ^[23].

Type of data: clinical reports, reviewed
Serious · tamoxifen

CBD can interfere with how tamoxifen is processed, a serious interaction for anyone being treated for breast cancer ^[23].

Type of data: clinical reports, reviewed
Possible · antidepressants

CBD may block liver enzymes (CYP2D6, CYP3A and CYP2C9) that clear many antidepressants, which could raise their levels in the blood ^[29]. Sedation can also add up.

Type of data: lab and mechanism
Possible · anti-anxiety medicines

The same liver enzymes clear many anti-anxiety medicines ^[29], and cannabis adds to the sedation of benzodiazepines. A survey also found these medicines are often used together with cannabis by people with PTSD and other conditions ^[29].

Type of data: lab and mechanism; survey
Studied · alcohol

In trials of CBD in people who were drinking, one trial found no interaction that ruled out use ^[18]. THC and alcohol together still impair driving and judgment more than either alone.

Type of data: randomized trial

Who should avoid cannabis

Who Should Avoid Cannabis for PTSD?

For some people, the risks of cannabis clearly outweigh a possible benefit. For others, it is a matter of extra caution and closer follow-up. If one of these describes you, tell the physician at the start of your appointment.

A history of psychosis or bipolar disorder

THC can bring on psychosis in vulnerable people. A personal or family history of schizophrenia, psychotic episodes or bipolar disorder is a strong reason to avoid THC.

Pregnancy and breastfeeding

THC crosses the placenta and passes into breast milk. Cannabis is generally avoided while pregnant, trying to conceive or breastfeeding.

Teens and young adults

The brain keeps developing through the teens and into early adulthood, and regular THC use at a young age carries more risk of dependence and of mental health problems.

High-dose oral CBD and the liver

High daily doses of CBD taken by mouth can raise liver enzymes, so people on such doses should have liver function monitored, especially if they take other medicines processed by the liver.

Sleep problems that started before the trauma

In trauma survivors, insomnia before the event predicted more alcohol and cannabis use afterward ^[26]. If you slept badly long before the trauma, that is worth mentioning.

Withdrawal and tolerance

Regular high-dose THC can lead to tolerance, needing more for the same effect, and to withdrawal when stopping: irritability, poor sleep and vivid dreams that can feel like PTSD getting worse.

How often do cannabis and alcohol problems show up alongside PTSD?

How to read it: each row compares people with PTSD to people without it. The dot is the best estimate of how many times more often the problem showed up; the bar is the likely range (95% confidence interval) ^[22]^[25]. Right of the gray line means more often, left means less often.

estimate · likely range (95% CI) · no difference

No difference

A. Adults with severe PTSD symptoms vs. without (2024) ^[22]

Problematic cannabis use ^[22] 3.0× more often (2.3–3.8)

Problematic alcohol use ^[22] 2.3× more often (1.9–2.7)

B. People treated for heroin dependence, with PTSD vs. without (2025) ^[25]

Cannabis dependence ^[25] 4.3× more often (2.2–8.6)

Major depression ^[25] 2.2× more often (1.1–4.3)

Suicide attempt in lifetime ^[25] 2.0× more often (1.1–3.5)

½× 1× 2× 4× 8×

← less oftenmore often →

In both groups, people with PTSD had cannabis and alcohol problems two to four times as often ^[22]^[25] — an association, not proof that one causes the other.

Show as a table

Effect estimates shown in the chart
Compared groups	Outcome	Odds ratio (95% CI)	p	Source
Severe PTSD symptoms vs. none	Problematic cannabis use	OR 2.96 (2.31–3.79)	0.001	Cross-sectional, 2024 ^[22]
Severe PTSD symptoms vs. none	Problematic alcohol use	OR 2.26 (1.87–2.73)	0.001	Cross-sectional, 2024 ^[22]
PTSD vs. no PTSD, heroin dependence	Cannabis dependence	OR 4.32 (2.18–8.58)	0.001	Cohort, 2025 ^[25]
PTSD vs. no PTSD, heroin dependence	Major depressive episode	OR 2.2 (1.13–4.29)	0.05	Cohort, 2025 ^[25]
PTSD vs. no PTSD, heroin dependence	Lifetime suicide attempt	OR 1.98 (1.11–3.51)	0.05	Cohort, 2025 ^[25]

What this means for you

What This Means for You: Talking With Your Physician

If you are considering medical cannabis for PTSD, a realistic expectation helps. Some people report better sleep, fewer nightmares or less tension; others notice no change, and some feel more anxious. Cannabis does not erase traumatic memories or replace trauma-focused therapy, and it should not be a reason to stop treatment that is helping. Many people do best using it, if at all, as one part of a plan that also includes therapy and good sleep habits.

It also helps to know what not to expect from a good appointment: no promise of approval, no pressure to buy anything, and no instant fix. You should expect questions about your symptoms, your medicines and your history, an honest view of the risks, and a plan for how to tell whether it is working.

Questions to ask your physician

Could cannabis interact with any of my current medicines, and should any doses change?
Which of my symptoms, such as sleep, nightmares or feeling on edge, is it most likely to help, and which could it worsen?
Would a CBD-only product, a THC product or a mix fit my situation, and which form?
When can I drive or work after using it, and how long should I wait?
How will cannabis fit with my therapy, and should I tell my therapist?
How will we track whether it helps, and when should we review the plan? (Bring the symptom diary.)
What signs mean I should cut back or stop?

Symptom diary · Does PTSD qualify for a medical card?

Does PTSD Qualify for a Medical Marijuana Card?

In many states, yes. PTSD is one of the conditions most often named on state lists of qualifying conditions. Some states list it outright; others let a physician recommend cannabis for any condition they judge it may help; a few do not include it at all, and the rules change as legislatures update their programs. Whatever the list says, the decision about you is made by a physician licensed in your state after reviewing your history.

Is PTSD on your state’s list?

Each state publishes its own list of qualifying conditions and its own rules for proof of diagnosis. The general guide to state laws shows where to find yours.

State laws and regulations

The registry and your card

After a physician’s recommendation, most states ask you to register with the state program, which issues the card or patient license. Many states also let a registered caregiver buy for a patient who cannot do it alone.

How the evaluation works

Where you can buy

Medical card holders buy from state-licensed dispensaries, where products are tested and labeled with THC and CBD content. Two examples of how states handle PTSD: Ohio and Texas.

PTSD card in Ohio · PTSD in Texas

Traveling with your card

Some states honor out-of-state medical cards, a policy called reciprocity; many do not, and crossing state lines with cannabis is illegal under federal law. Check the rules of the state you are visiting before you go.

Medical card FAQ

Medical card vs. recreational cannabis for PTSD patients

In states where adults can buy cannabis without a card, people often ask whether a medical card is still worth it. The answer depends on the state. Depending on where you live, a medical card can mean lower taxes at the counter, higher purchase and possession limits, access from age 18 instead of 21, and a wider choice of medical products. Just as important for PTSD, it comes with a physician who has looked at your medicines and your history and can help you adjust. In some states the savings are small, and it is fair to say so; your state’s page lists the actual rules.

Get your medical card in your state

How to Get a Medical Marijuana Card for PTSD Online

Getting a recommendation does not mean a waiting room. Everything happens online, from home, with a physician licensed in your state. Here is what happens after you start, step by step.

Right on this page

Check if you qualify

Answer a few questions in the check above to see how your situation lines up with what state programs ask for.
Application about 5 minutes · appointment about 15 minutes

Apply and meet a physician licensed in your state

Fill in a short application, then meet the physician one-on-one. You agree on the time with the physician; keep an hour free rather than a minute, in case the previous appointment runs over.
Usually within 24–48 hours after the appointment

Get your recommendation

If the physician finds medical cannabis appropriate, you receive a signed recommendation or certification by email. If not, they explain why.
Timeline set by your state

Register with your state

Use the recommendation to register with your state program. Some states let you visit a dispensary right after approval with a temporary card; others ask you to wait for the card itself.

What to have ready

A photo ID and proof of address in your state. Records of your PTSD diagnosis help, such as a letter from a therapist, VA records or a discharge summary, but they are not always required: the physician can assess your symptoms during the appointment, and some states accept that. A list of your medicines and the symptom diary from this page make the conversation more useful.

After you apply

You receive an email confirming your application and the next steps. Your documents and messages live in your patient account. Already a patient? Log in to your account to see your appointment, recommendation and records.

Renewing your medical card for PTSD

Recommendations and state cards expire, often after a year, though each state sets its own term. Start renewing about a month before the expiration date so there is no gap. The renewal appointment is a check-in: what has changed in your symptoms, sleep and medicines, and whether the plan should change. Bring your symptom diary; it shows the physician more than memory can. Your account and the state switcher at the top of this page lead to renewal for your state.

Which path fits you?

First card: follow the four steps above, starting with the qualification check.
Renewing: see renewing your card, then choose your state at the top of the page.
Moving or traveling to another state: read how state programs differ.
Veteran: see veterans, the VA and privacy and our page on support for veterans.
Worried about your job: see work and drug tests.

Our physicians and medical review

Every appointment is with a physician who holds an active license in your state, one-on-one and private. Content on this page is reviewed by our medical team and updated as new research is published; you can learn about the team on our physicians page.

4.6out of 5 on Google

Across 250 reviews from patients in the states where we are licensed. We do not sort them by score and do not hide the low ones.

150,000+patients evaluated — everyone who has been through an appointment with us, in every state where we are licensed
Since 2017doing only this: online evaluations for medical cannabis programs, and nothing else on the side

Book your appointment See if I qualify

Legal Protections and Privacy: Veterans, Work, Firearms

Fear of consequences keeps many people with PTSD from asking about medical cannabis at all. The rules below are general and differ by state and job; they are not legal advice, but they show where the real limits are.

Veterans and the VA

VA clinicians can talk with you about cannabis, but because it is illegal under federal law, they do not recommend it or fill out state program forms. Taking part in a state program does not by itself cost you VA health care or benefits, and the VA encourages veterans to tell their clinicians about cannabis use so care stays safe ^[31].
Work and drug tests

Some states protect medical card holders from being fired only for having a card; others do not, and no state lets you be impaired at work. Federally regulated jobs, such as commercial drivers and pilots, and many federal positions do not allow cannabis use, with or without a card.
Firearms

Federal law bars “unlawful users” of controlled substances from having guns ^[32], and federal authorities treat medical cannabis users the same way. ATF Form 4473, filled out when buying a gun from a licensed dealer, asks about it directly ^[33]. Read more in our article on gun ownership with a medical card.
Privacy

Your appointment and medical records are protected under HIPAA ^[34]. State registries are confidential, and access is limited to the program and those it authorizes, such as dispensaries checking your card. Veterans often worry about who can see health data in connection with VA claims ^[24]; it is a fair question to ask your physician.

Support for veterans · State laws and regulations

Future Directions and Conclusion

Research on cannabis and PTSD is moving from “does it seem to help?” toward better questions: which compound, which symptom, which person, and how it fits with therapy. Three directions are worth watching.

Lab and animal research

In animal studies, scientists are testing ways to boost the body’s own endocannabinoids, for example by slowing the enzyme that breaks down anandamide, to help fear memories fade. Results in animals do not yet show what happens in people.
Larger reviews and trials

A planned systematic review and meta-analysis will pool trials of plant and prescription cannabinoids across mental health conditions, including PTSD ^[1].
Remote tracking in real life

Studies with phones and wearables now follow veterans day by day; in one pilot, 91.9% shared sensor data such as heart rate and sleep ^[24]. This could show how cannabis use and symptoms rise and fall together.

Key takeaways

PTSD is common and treatable; trauma-focused therapies and certain antidepressants are the first-line options.
Medical cannabis has been studied mostly for sleep, nightmares and tension. Results are mixed, and strong long-term trials are missing.
Smoke and vapor add airway irritation; any form that reaches the blood brings THC effects, liver processing, drug interactions, sedation and driving risks.
THC can worsen anxiety and bring on psychosis in vulnerable people; CBD carries different risks, mainly side effects and interactions.
PTSD is linked with more cannabis and alcohol problems, so watching your own use matters.
The decision is best made with a physician licensed in your state, alongside the treatment that already helps you.

See if I qualify

PTSD and Medical Cannabis: FAQ

Is cannabis an approved treatment for PTSD?

No cannabis product is approved by the FDA for PTSD, and major guidelines do not list it as a first-line treatment; the VA/DoD guideline advises against it as a PTSD treatment ^[12]. Many states, however, include PTSD among the conditions that qualify for a medical card, so a physician can recommend it under state law.

Can THC help with PTSD symptoms?

Possibly for some people and some symptoms, such as sleep. Lab studies show THC affects fear memory in a dose-dependent way ^[15], but THC can also raise anxiety and, in vulnerable people, bring on psychosis. Strong trials showing lasting benefit are still missing.

What about CBD for PTSD?

CBD does not cause a high and was generally tolerated in trials ^[18]. But randomized studies have not shown a clear benefit: one found no clear effect on emotional reactions to trauma reminders ^[17]. CBD also interacts with some medicines, such as warfarin and clobazam ^[23].

Can cannabis worsen PTSD symptoms?

Yes, for some people. Increased cannabis use during the pandemic was linked with worsening depression in people with PTSD ^[27], and day-to-day tracking shows cannabis can add to stress and poor sleep as well as ease them ^[16]. High-THC products can heighten anxiety and paranoia.

What are the risks of using cannabis for PTSD?

The main ones are anxiety or paranoia from THC, psychosis in vulnerable people, sedation and impaired driving, interactions with medicines, and cannabis use disorder, which is more common in people with PTSD ^[30]. Smoking and vaping add airway irritation.

Should I discuss cannabis use with my doctor if I have PTSD?

Yes, always, including if you already use it. Your physician can check interactions with your medicines, help you judge whether it is helping, and make sure it does not get in the way of therapy. Doctors hear this question every day; it will not shock them.

What is the endocannabinoid system (ECS)?

It is the body’s own signaling system of cannabis-like chemicals, such as anandamide, and their CB1 and CB2 receptors. It helps regulate mood, sleep, memory and the stress response, including how the brain learns that a threat has passed.

Is it better to use CBD or THC for PTSD?

There is no proven answer. CBD has fewer mental side effects but little evidence of benefit so far; THC has more research on sleep and fear but more risks. A physician can weigh your symptoms, medicines and history to suggest what, if anything, to try.

Can cannabis help with PTSD nightmares or sleep problems?

This is the most-studied hope. The prescription cannabinoid nabilone has been used for PTSD nightmares ^[23], and some people report better sleep. Daily tracking also shows nights when cannabis goes with worse sleep ^[16], and stopping regular use can bring vivid dreams back.

Can PTSD be cured?

Many people recover to the point that they no longer meet the criteria for PTSD, especially after trauma-focused therapy. Others keep some symptoms that flare under stress but are much easier to manage. “Cured” is less useful than “treated,” and treatment works at any age.

Does PTSD get worse with age?

Not necessarily. Untreated PTSD can return or intensify with retirement, losses, illness or news that brings memories back, which some older veterans experience. It can also improve with time and treatment.

How long do PTSD episodes last?

A flashback or panic surge may last seconds to minutes, while the unsettled feeling afterward can linger for hours or days. Periods of worse symptoms can stretch for weeks, often around anniversaries or stress. Grounding skills shorten episodes for many people.

Is PTSD a disability?

It can be. PTSD can be a disability under the ADA for workplace accommodations ^[8], Social Security evaluates it under listing 12.15 ^[9], and the VA rates service-connected PTSD. Each decides case by case; see the work and disability section above.

Does PTSD qualify for a medical card?

In many states, yes, either by name or through a physician’s judgment. A few states do not include it. A physician licensed in your state reviews your history and decides whether you meet your state’s rules. Choose your state at the top of the page to see its program, or start with the qualification check.

Do I need a PTSD diagnosis on paper?

Records help but are not always required. Some states ask for documentation of the diagnosis; in others, the physician can assess your symptoms during the appointment. Bring what you have, such as therapist letters or VA records.

Is the evaluation done online?

Yes. Where state law allows it, the evaluation is a telemedicine appointment: a private, one-on-one conversation with a physician licensed in your state, from home, with no waiting room.

Can I combine cannabis with SSRIs?

Only with your prescriber involved. CBD may slow the liver enzymes that clear many antidepressants ^[29], and both can add to drowsiness. Never stop an antidepressant suddenly to try cannabis instead.

Will my employer or the VA find out?

Your appointment is confidential under HIPAA ^[34], and state registries are confidential rather than open to employers. A workplace drug test can still detect cannabis. Taking part in a state program does not by itself affect VA benefits, and telling your VA clinician about cannabis use helps keep your care safe ^[31].

Is delta-8 THC an option for PTSD?

Delta-8 THC is usually made from hemp CBD and sold in gas stations and online, outside medical programs. It has not been studied for PTSD, products are often poorly tested and labeled, and it still causes a high. Dispensary products under a medical card are tested and labeled.

Where can I buy medical cannabis?

Only from dispensaries licensed by your state’s medical program, in person or through their ordering systems where allowed. Your state program lists licensed locations.

Can I use my card in another state?

Sometimes. Some states accept out-of-state cards, some require a visitor registration and many do not recognize them at all. Taking cannabis across state lines is illegal under federal law.

What if I lose my card?

Contact your state program to request a replacement; most handle it through the same online registry where you registered. Your physician’s recommendation stays valid until its expiration date.

Brain & nervous system 4

Pain & body 3

Military medicine 1

Military medicine

PTSD resources

PTSD Awareness Month is held every June, with June 27 marked as PTSD Awareness Day; the National Center for PTSD shares free materials for it ^[35].
The National Center for PTSD at the VA offers education, self-help apps and the treatment decision aid for anyone, veteran or not ^[5].
988 Suicide & Crisis Lifeline: call or text 988 any time ^[3]. Veterans Crisis Line: call 988 and press 1 ^[4].
Sleep is where many people first notice PTSD. Our article Is cannabis good or bad for sleep? covers what research says about cannabis and sleep in general.

All conditions A–Z

How else can we help you?

If you have read this far, you know more about PTSD and cannabis than most people walking into a dispensary. The next step is a private, one-on-one conversation with a physician licensed in your state, who looks at your symptoms, your medicines and your goals and tells you honestly whether medical cannabis fits.

Get your medical marijuana card

Prefer to ask first? [email protected] (888) 409-2951

References

35 sources

1. Wilson J, Langcake A, Bryant Z, et al. The safety and efficacy of cannabinoids for the treatment of mental health and substance use disorders: protocol for a systematic review and meta-analysis. Syst Rev · 2025 · systematic_review DOI: 10.1186/s13643-024-02657-3 PMID: 39856692
2. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR). 2022.
3. 988 Suicide & Crisis Lifeline. 988 Suicide & Crisis Lifeline. 2026.
4. U.S. Department of Veterans Affairs. Veterans Crisis Line. 2026.
5. National Center for PTSD, U.S. Department of Veterans Affairs. PTSD: National Center for PTSD. 2026.
6. National Center for Health Statistics, Centers for Disease Control and Prevention. ICD-10-CM: International Classification of Diseases, Tenth Revision, Clinical Modification. 2026.
7. World Health Organization. ICD-11 for Mortality and Morbidity Statistics: 6B41 Complex post traumatic stress disorder. 2024.
8. U.S. Equal Employment Opportunity Commission. Depression, PTSD, & Other Mental Health Conditions in the Workplace: Your Legal Rights. 2016.
9. Social Security Administration. Disability Evaluation Under Social Security: 12.00 Mental Disorders – Adult. 2026.
10. U.S. Department of Veterans Affairs. Disability Benefits Questionnaires (DBQs). 2026.
11. U.S. Department of Justice, Civil Rights Division. Service Animals. 2026.
12. U.S. Department of Veterans Affairs and Department of Defense. VA/DoD Clinical Practice Guideline for the Management of Posttraumatic Stress Disorder and Acute Stress Disorder. 2023.
13. American Psychological Association. Clinical Practice Guideline for the Treatment of Posttraumatic Stress Disorder. 2017.
14. National Center for PTSD, U.S. Department of Veterans Affairs. PTSD Treatment Decision Aid. 2026.
15. Zabik NL, Iadipaolo A, Peters CA, et al. Dose-dependent effect of acute THC on extinction memory recall and fear renewal: a randomized, double-blind, placebo-controlled study. Psychopharmacology (Berl) · 2026 · rct DOI: 10.1007/s00213-024-06702-w PMID: 39412674
16. Davis JP, Saba SK, Leightley D, et al. Seeking relief or fueling the fire? Understanding the complex role of cannabis in PTSD, stress, and sleep dysregulation. Psychol Addict Behav · 2026 · cohort DOI: 10.1037/adb0001097 PMID: 40965945
17. Gournay LR, Ferretti ML, Nguyen AM, et al. The effects of acute versus repeated cannabidiol administration on trauma-relevant emotional reactivity: A double-blind, randomized, placebo-controlled trial. J Trauma Stress · 2024 · rct DOI: 10.1002/jts.23072 PMID: 38959155
18. Bogenschutz MP, Blessing E, Dgheim D, et al. Effects of cannabidiol in alcohol use disorder patients with and without co-occurring post-traumatic stress disorder: Tolerability but no evidence for efficacy in two randomized proof-of-concept trials. Alcohol Clin Exp Res (Hoboken) · 2026 · rct DOI: 10.1111/acer.70212 PMID: 41312717
19. Danielson CK, Adams Z, McCart MR, et al. Safety and Efficacy of Exposure-Based Risk Reduction Through Family Therapy for Co-occurring Substance Use Problems and Posttraumatic Stress Disorder Symptoms Among Adolescents: A Randomized Clinical Trial. JAMA Psychiatry · 2020 · rct DOI: 10.1001/jamapsychiatry.2019.4803 PMID: 32022827
20. Hill ML, Kline AC, Saraiya TC, et al. Cannabis use and trauma-focused treatment for co-occurring posttraumatic stress disorder and substance use disorders: A meta-analysis of individual patient data. J Anxiety Disord · 2024 · meta_analysis DOI: 10.1016/j.janxdis.2024.102827 PMID: 38266511
21. Datta A, Erridge S, Warner-Levy J, et al. UK medical cannabis registry: an updated clinical outcomes analysis of patients with post-traumatic stress disorder. Expert Rev Neurother · 2025 · cohort DOI: 10.1080/14737175.2025.2490539 PMID: 40235073
22. Kühner C, Will JP, Lortye SA, et al. The Association between Post-Traumatic Stress Disorder and Problematic Alcohol and Cannabis Use in a Multi-Ethnic Cohort in The Netherlands: The HELIUS Study. Int J Environ Res Public Health · 2024 · cross_sectional DOI: 10.3390/ijerph21101345 PMID: 39457318
23. Müller-Vahl KR Cannabinoids in the Treatment of Selected Mental Illnesses: Practical Approach and Overview of the Literature. Pharmacopsychiatry · 2024 · narrative_review DOI: 10.1055/a-2256-0098 PMID: 38428836
24. Leightley D, Dilkina B, Pedersen ER, et al. A remote measurement study of PTSD and cannabis use among veterans: Recruitment, retention, and data availability. PLoS One · 2025 · cohort DOI: 10.1371/journal.pone.0332239 PMID: 41021546
25. Leung C, Marel C, Teesson M, et al. Correlates and predictors of PTSD among people with heroin dependence: Findings from the 18-20-year follow-up of the Australian Treatment Outcomes Study (ATOS). J Subst Use Addict Treat · 2025 · cohort DOI: 10.1016/j.josat.2025.209772 PMID: 40752835
26. Short NA, Ellis RA, Pezza M, et al. Pre-trauma insomnia and posttraumatic alcohol and cannabis use in the AURORA observational cohort study of trauma survivors. J Psychiatr Res · 2025 · cohort DOI: 10.1016/j.jpsychires.2025.06.027 PMID: 40582081
27. Murkar A, Kendzerska T, Shlik J, et al. Increased cannabis intake during the COVID-19 pandemic is associated with worsening of depression symptoms in people with PTSD. BMC Psychiatry · 2022 · survey DOI: 10.1186/s12888-022-04185-7 PMID: 35978287
28. Stevenson BL, Lee JY, Oslin DW, et al. The impact of substance use on posttraumatic stress disorder symptoms and treatment discontinuation. J Trauma Stress · 2024 · rct DOI: 10.1002/jts.23002 PMID: 38085564
29. Grundmann O, Veltri CA, Morcos S, et al. Correlations of kratom (Mitragyna speciosa Korth.) use behavior and psychiatric conditions from a cross-sectional survey. Exp Clin Psychopharmacol · 2023 · cohort DOI: 10.1037/pha0000632 PMID: 36634016
30. Kevorkian S, Bonn-Miller MO, Belendiuk K, et al. Associations among trauma, posttraumatic stress disorder, cannabis use, and cannabis use disorder in a nationally representative epidemiologic sample. Psychol Addict Behav · 2015 · cross_sectional DOI: 10.1037/adb0000110 PMID: 26415060
31. U.S. Department of Veterans Affairs. VA and Marijuana: What Veterans Need to Know. 2026.
32. Office of the Law Revision Counsel, U.S. House of Representatives. 18 U.S.C. § 922: Unlawful acts. 2026.
33. Bureau of Alcohol, Tobacco, Firearms and Explosives. Firearms, including ATF Form 4473 Firearms Transaction Record. 2026.
34. U.S. Department of Health and Human Services. HIPAA for Individuals. 2026.
35. National Center for PTSD, U.S. Department of Veterans Affairs. PTSD Awareness. 2026.