Tourette Syndrome and Medical Cannabis: What Research Shows
Tourette syndrome is a tic disorder that starts in childhood, and medical cannabis is one of the options researchers have tested when tics do not settle with standard care. In small trials, some adults had fewer or milder tics on THC-based products, but the results are mixed, side effects were common, and no study shows that cannabis cures Tourette syndrome. Whether it is worth trying is a decision to make with a physician who sees your full medicine list.
Built on peer-reviewed research published from 2014 to 2026: reviews of trials in people, cohort studies and laboratory work
Living with tics when standard treatment isn’t enough
Tics are not a habit you can drop by trying harder. They arrive with an urge, a pressure, itch or tension that builds until the movement or sound releases it, and they happen anywhere: in class, at the dinner table, in a job interview. People notice. Some stare, some laugh, and a few assume you are doing it on purpose.
Holding tics back is possible for a while, and it has a price. Attention goes into suppressing them, the urge grows, and the tics often return harder at home in the evening. Add medicines that leave you sleepy or slowed down, a school or workplace that does not understand, and nights broken by tics or worry, and it is easy to see why people with Tourette syndrome, and parents of children with it, look for anything else that might help.
What weighs on you most right now?
Choose one; each points to the part of this page that answers it.
Tics in public: most people with Tourette syndrome never have swearing tics, and for many the tics ease as they grow up. Read whether Tourette syndrome gets better with age.
Holding tics back: behavioral therapy turns suppression into a trained skill instead of an exhausting fight. See how behavioral therapy for tics works.
Medicine side effects: sleepiness, weight gain and feeling flat are common reasons people stop tic medicines – and cannabis brings side effects of its own. Compare them in side effects and safety.
Sleep and fatigue: broken sleep can come from ADHD, anxiety or medicine timing as well as from the tics. Read Tourette syndrome and other conditions.
School or work: small, practical changes make a real difference. See how to deal with Tourette syndrome day to day.
What is Tourette syndrome?
Tourette syndrome is a condition of the nervous system in which a person has several motor tics and at least one vocal tic (sudden, repeated movements or sounds they cannot fully control) for at least a year, starting before age 18 [1] [2].
Tics come in two kinds and at two levels. Motor tics are movements: blinking, nose-wrinkling, shoulder shrugs, head jerks. Vocal tics are sounds: sniffing, throat clearing, humming, grunting or words. Simple tics use one or a few body parts; complex tics combine several movements or sounds in a pattern [1]. Most people feel a warning sensation first, a premonitory urge, like the itch before a sneeze, that the tic briefly relieves. Swearing tics (coprolalia) are what most people picture, yet most people with Tourette syndrome never have them [1].
How does Tourette syndrome work? In plain terms, the brain circuits that normally filter out unwanted movements (loops between the cortex and deep structures called the basal ganglia and the thalamus) let some signals through. Researchers describe weaker braking in the striatum, part of the basal ganglia, and bursts of dopamine, a chemical messenger, that reinforce a tic the way a habit is reinforced [3].
How many people have it? Studies estimate about 1 in 162 children [4], and a review of 2022 research puts the worldwide figure at about 0.7% of children and teenagers [5]. Only about 1 in 333 children aged 3 to 17 has a diagnosis, so roughly half of cases are never named [4].
Motor tics
Simple: eye blinking, squinting, grimacing, nose twitching, shoulder shrugging, head jerking.
Complex: touching or tapping objects, hopping, bending, copying someone’s gestures, a sequence of movements that repeats in the same order.
Vocal tics
Simple: sniffing, throat clearing, coughing, grunting, humming, squeaks.
Complex: words or phrases, repeating your own or other people’s words, changes in the pitch or volume of speech; swearing only in a minority.
Quick answers
Is Tourette syndrome a mental disorder?
It sits on the border. The psychiatric manual DSM-5-TR lists it among neurodevelopmental disorders: conditions that begin while the brain is developing [8] – and the WHO classification ICD-11 places it with movement disorders of the nervous system [7]. Either way, tics are not a choice, and they say nothing about a person’s character or upbringing.
Is Tourette syndrome a disability?
It can be, depending on how much the tics and the conditions that come with them limit daily life. Children whose tics get in the way of learning may qualify for support at school, and adults can ask an employer for reasonable accommodations. Whether it counts legally is decided case by case, not by the diagnosis alone.
How do you pronounce Tourette?
“Too-RET.” The syndrome is named after Georges Gilles de la Tourette, the French neurologist who described it more than a century ago.
What causes Tourette syndrome – is it genetic?
Largely, yes. CDC describes Tourette syndrome as an inherited genetic condition [1], but there is no single “Tourette gene.” Many common gene variants each add a little risk, and a child can inherit the tendency without ever developing tics. In research published in 2024, those variants clustered in genes active in the cortex-striatum-thalamus circuit and in particular brain cell types, the same circuit that filters movement [9].
You cannot catch it from someone, and nothing a parent does on an ordinary day causes it. Researchers are still studying factors around birth: smoking during pregnancy, pregnancy complications, low birth weight and infections [1]. One long-running British cohort also linked cannabis use late in pregnancy to Tourette syndrome in children, which is covered in the section on pregnancy.
How do you get Tourette syndrome?
Mostly through genes passed down in families, together with factors around birth that are still being studied [1]. Stress, excitement and tiredness can make tics stronger for a while, but they do not create the condition.
Is Tourette syndrome preventable?
Can you develop Tourette syndrome later in life?
By definition, Tourette syndrome starts before age 18 [2]. Tics that appear for the first time in adulthood, especially suddenly, usually point to something else (another tic disorder, a medicine side effect or functional tic-like behavior) and deserve a neurologist’s assessment. See whether tics can start suddenly or in adulthood.
Is Tourette syndrome more common in boys?
Yes. CDC data show boys are about three times more likely than girls to have Tourette syndrome [4]. Girls get it too, and the diagnostic criteria are the same.
How is Tourette syndrome diagnosed?
There is no blood test or brain scan for Tourette syndrome. A pediatrician, family doctor, neurologist or psychiatrist makes the diagnosis from the history and from watching the tics, using the criteria of the DSM-5-TR [2] [8]. Scans and lab tests are used only to rule out other causes when something does not fit. On average, parents first notice tics at about age 6, and the diagnosis comes about two years later [4].
- Two or more motor tics and at least one vocal tic, though not necessarily at the same time [2].
- Tics for at least a year since the first one appeared [2].
- Onset before age 18 [2].
- The tics are not explained by a medicine, a drug or another medical condition [8].
Compare one feature across tic disorders
Pick a feature; nothing here diagnoses you.
| Condition | Age at onset | Tic types | How long | How it starts |
|---|---|---|---|---|
| Tourette syndrome | Before 18, usually between 5 and 10 [1] | Two or more motor tics and at least one vocal tic [2] | At least a year [2] | Gradually, most often with motor tics of the head and neck [1] |
| Persistent (chronic) tic disorder | Before 18 [2] | Motor or vocal tics, not both [2] | At least a year [2] | Gradually, in childhood |
| Provisional tic disorder | Before 18 [2] | Motor, vocal or both [2] | Less than a year [2] | Gradually; about 30% are in remission a year later [9] |
| Functional tic-like behavior | Often teens and young adults [11] | Complex movements and words from the start | Varies; treated differently from tics | Often abruptly, over days [5] often linked to social media |
Can tics start suddenly or in adulthood?
Tourette syndrome builds up gradually in childhood. In recent years, though, clinics in several countries have seen young people develop complex tic-like movements and words within days, often after watching videos of people with tics on social media [5]. This is a functional disorder: the symptoms are real and not put on, but they arise differently from tics and are treated differently.
Why this matters for a medical card: the physician who evaluates you goes by the diagnosis in your records. A note from the neurologist or pediatrician who diagnosed Tourette syndrome, with the code F95.2 if it appears there, is the single most useful document you can bring.
Could medical cannabis be worth discussing for your tics?
Thirteen short questions about the diagnosis, the tics and the medicines already in use. Your answers stay on this page and show what to bring to a physician.
13 questions · about a minute · your answers stay in this browser
Tourette syndrome and other conditions
About 83% of children with Tourette syndrome have at least one other diagnosis, according to CDC data [4] – most often ADHD, anxiety or obsessive-compulsive disorder [1]. These conditions often cause more day-to-day trouble than the tics themselves, and they change the treatment plan: a medicine for ADHD, anxiety or OCD has to fit with whatever is done for tics, cannabis included.
Which of these is in your records?
Pick one to see why it matters here.
ADHD: one of the most common companions of Tourette syndrome [1]. Stimulant medicines for ADHD are widely used, and how they sit with tics is a question for the prescriber. Read what is known about cannabis and ADHD.
OCD: more than a third of people with Tourette syndrome also have obsessive-compulsive disorder [4]. Some repeated actions sit between a complex tic and a compulsion, and telling them apart changes the treatment.
Anxiety: common alongside Tourette syndrome [1], and stress tends to make tics louder. It is one of the first things a physician asks about before discussing THC. Read anxiety and medical cannabis.
Depression: living with visible tics can wear down mood, especially in the teenage years. Read depression and medical cannabis.
Sleep problems: trouble falling asleep and restless nights can come from ADHD, anxiety or the timing of medicines as well as from tics. Read insomnia and medical cannabis.
Chronic pain: between 47% and 60% of people with Tourette syndrome report pain, in research summarized for 2024 [9]. Read chronic pain and medical cannabis.
Self-injury: self-injurious behavior was found in 16.9% of people with Tourette syndrome, in a review of 2022 research [5]. Tics that hurt the eyes, neck or skin need a neurologist promptly, before any other step.
A co-occurring diagnosis may be on your state’s list of qualifying conditions even where Tourette syndrome is not; the physician confirms it against your records.
Can Tourette syndrome be cured? Is it permanent?
There is no cure for Tourette syndrome, but it can be managed, and for many people it becomes much milder with time [1]. Treatment aims at the tics and conditions that get in the way of life, not at making every tic disappear [12].
What often changes with age
Tics are usually at their worst in late childhood, around age 9 on average [4]. In most people they decrease during adolescence and early adulthood, and sometimes they disappear entirely [1].
What can stay
Many adults keep some tics [1], and co-occurring conditions such as ADHD, OCD or anxiety may need care long after the tics fade. Tics also wax and wane: a quiet stretch can be followed by a louder month.
How long does Tourette syndrome last?
Can Tourette syndrome go away or get better with age?
Often it gets better, and sometimes the tics disappear entirely; others keep tics into adulthood [1]. There is no reliable way to predict in childhood which path a person will take, which is why treatment follows how much the tics interfere right now.
Is Tourette syndrome dangerous or deadly?
Tourette syndrome itself is not a deadly disease. The dangers come from particular situations: very forceful tics that injure the neck, eyes or skin; self-injurious behavior, which a review of 2022 research found in 16.9% of people with the condition [5]; and the strain of co-occurring depression or anxiety. Any of these is a reason to see a neurologist soon.
Can tics be controlled?
Partly. Many people can hold tics back for a short time, but the urge builds and the tics often come out later. Behavioral therapy teaches a different skill, noticing the urge and answering it with a competing movement, and it has been shown to reduce tics in children and adults [12].
How to treat Tourette syndrome
Treatment depends on how much the tics interfere. Many people with mild tics need nothing beyond understanding and a few adjustments. When tics cause pain, embarrassment or trouble at school or work, the American Academy of Neurology guideline offers behavioral therapy as a first option, with medicines and procedures for tics that stay severe [13] [12]. Cannabis is a question to discuss with a physician on top of that plan, not a replacement for it.
| Method | Who it is for | What to consider |
|---|---|---|
| Behavioral therapy | ||
| CBIT (Comprehensive Behavioral Intervention for Tics) | Children and adults whose tics cause distress or get in the way [12] | Built on habit reversal (awareness training plus a competing response) with education and relaxation; shown to reduce tics and tic-related impairment [12]. Needs a trained therapist and practice between sessions. |
| Speech therapy for vocal blocking tics | Children whose vocal tics interrupt their speech | Described in only two children, aged 7 and 9, over 21 and 35 sessions, without standard tic scales [14]. Background |
| Medicines | ||
| Alpha-2 agonists (clonidine, guanfacine) | Often considered for milder tics, especially with ADHD [13] | Sleepiness, low blood pressure and a slow heart rate are listed on the label [15]. |
| Antipsychotics (aripiprazole and others) | Moderate to severe tics [13]; aripiprazole is FDA-approved for Tourette’s disorder in children and teens [16] | Weight gain, stiff muscles, tiredness and restlessness [12]. Most medicines used for tics are not FDA-approved for them [12]. |
| Botulinum toxin injections | A few troublesome tics in one place, such as the neck [13] | Works locally and wears off, so injections are repeated. |
| Procedures | ||
| Deep brain stimulation (DBS) | Adults with severe tics that did not respond to other treatment [17] | In an international registry of 110 patients, the best improvement in tics, about 40%, came 13 months after surgery [17]. Brain surgery carries its own risks. Background |
How to deal with Tourette syndrome day to day
Most of living with tics happens outside the clinic. A few changes in the places where tics matter most take pressure off the person and the people around them.
At school
Tell teachers what the tics look like and that they are involuntary. A seat near the door, short breaks, extra time on tests and a way to step out when the urge builds help most. A written school plan keeps these from depending on one teacher’s goodwill.
At work
You decide whether and how to tell an employer. If tics or co-occurring conditions affect the job, you can ask for reasonable accommodations: a quieter workspace, flexible breaks, written instructions. A one-line explanation ends most awkward moments.
At home
Ignoring a tic usually works better than commenting on it. Many families notice that tiredness and stress make tics louder, so routines around sleep help. Keep a tic diary before medical visits, and make room for what the person is good at.
Does cannabis help Tourette syndrome?
Possibly, for some people, but not reliably, and not without side effects. A 2026 systematic review of 13 studies with 205 participants in all, focused on Tourette syndrome that resisted standard treatment, found that cannabinoids lowered tic scores in some studies, while the studies were small, differed from one another and carried a high risk of bias [18]. The fair summary is “worth discussing for hard-to-treat tics,” not “proven.”
What was tested
Three kinds of products have been tried in people with Tourette syndrome. Pick one to read it on its own.
Nabiximols spray
Randomized trial
A mouth spray with THC and CBD, compared with placebo in adults with Tourette syndrome [18]. It is not approved in the U.S. [19].
Randomized and placebo-controlled: the strongest design in this field, though still small [18].
More people improved than on placebo, but the gap could have been chance, and side effects were frequent.
THC/CBD oil
Crossover trial
An oil taken by mouth containing THC and CBD, given for 6 weeks to 22 adults with severe Tourette syndrome, each trying both oil and placebo [3].
A small crossover trial; a 2026 review groups it with studies whose results were mixed [3].
Short and small: a signal worth following, not proof.
THC with PEA
Open pilot, no control group
THC combined with PEA (palmitoylethanolamide, a fatty compound the body also makes) in an open pilot study [18].
Tic scores on the YGTSS, a clinician’s rating of tic severity, fell by 7.9 points (p = 0.002) [18] – but everyone knew what they were taking.
Encouraging, and the weakest design of the three.
How big is the effect, and at what cost?
How to read it: each pair of bars compares people on nabiximols with people on placebo. The dark bar is nabiximols, the lighter bar is placebo. Numbers are percentages of each group.
What this means for you: if tics have not settled with behavioral therapy and standard medicines, cannabinoids are a reasonable question to bring to a physician, with the expectation of a modest chance of benefit and a high chance of side effects such as sleepiness and dizziness.
What the research shows, from strongest to weakest
Not all studies count the same. A randomized trial in people answers “does it work?” far better than a case report or a mouse experiment. Here is what exists for cannabinoids and Tourette syndrome at each level, with background studies clearly marked.
| Level | What exists for Tourette syndrome | What it can and cannot tell you |
|---|---|---|
| Reviews of trials in people | A 2026 systematic review of 13 studies and 205 participants, including randomized trials of nabiximols [18]; yearly research summaries that describe the CANNA-TICS trial of 97 patients over 13 weeks [20]. | Can show whether tics fall and how often side effects occur; the trials behind it are still small, short and mixed. |
| Cohort and registry studies | A pregnancy cohort of 6,090 children [10]; a registry of 110 deep brain stimulation patients [17] and a cohort comparing social-media-linked tic-like behavior with Tourette syndrome [11]. Background, not a cannabis study | Show links and the course of the condition; cannot prove that cannabis helps or harms. |
| Case reports | Speech therapy for vocal blocking tics in two children [14]. Background, not a cannabis study | Describe single patients; useful for ideas, not conclusions. |
| Animal studies | Mouse studies of CB1 and CB2 receptors and of drugs acting on estrogen receptors in tic-like behavior [21] [22]. | Explain possible mechanisms; say nothing yet about patients. |
Browse the studies yourself
Every study cited on this page, in plain words, including neutral and negative results.
Alternative treatments for treatment-resistant Tourette syndrome
Cannabinoids lowered tic scores in some studies; on nabiximols 21.9% had their tics drop by at least a quarter against 9.1% on placebo (p = 0.07), with more side effects [18].
What drives tics and how they are managed
Describes the brain circuits behind tics and current treatments, including a 6-week crossover trial of THC/CBD oil in 22 adults with severe Tourette syndrome [3].
Medical cannabis for teenagers with Tourette syndrome: tread carefully
Urges caution before medical cannabis is tested or used in adolescents with Tourette syndrome, whose brains are still developing [23].
Tourette syndrome research highlights from 2024
Gene variants in the cortex-striatum-thalamus circuit, pain in 47-60% of people with Tourette syndrome, and about 30% remission of provisional tic disorder after a year [9].
Tourette syndrome research highlights from 2023
Covers CANNA-TICS, a cannabis trial in 97 patients over 13 weeks, and the questions it left open [20].
Tourette syndrome research highlights from 2022
Puts prevalence at about 0.7% of children and teens and self-injury at 16.9%, and describes the rise of tic-like behavior linked to social media [5].
Social-media-linked tic-like behavior versus Tourette syndrome
Symptoms began at 19.2 years on average, against childhood onset in 1,032 people with Tourette syndrome or chronic tic disorder [11].
Deep brain stimulation in Tourette syndrome
Across 13 institutions on 3 continents, tics improved by about 40% at best, reached 13 months after surgery [17].
Exposures before and around birth and tics in children
Cannabis use in the last 2 months of pregnancy was linked to Tourette syndrome in the child (odds ratio 4.3, 95% CI 1.14-16.22); the link with the wider tic group was not clear [10].
Speech therapy for vocal blocking tics
Two children aged 7 and 9 were treated over 21 and 35 sessions; without standard tic scales, the results are hard to generalize [14].
Disrupted cannabinoid signaling after birth in mice
Blocking CB1 receptors in young male mice produced tic-like and ADHD-like behavior, and an adjusted diet prevented the vocal-like tics. In animals only [21].
Estrogen- and CB2-receptor drugs and repetitive behavior in mice
Drugs acting on estrogen and CB2 receptors reduced induced repetitive behaviors in young mice; whether anything similar happens in people is unknown [22].
No studies of this type are cited on this page.
What kinds of studies is this evidence built on?
How to read it: each row is one kind of study, and the bar shows how many published studies on cannabinoids and Tourette syndrome are of that kind. Stronger designs are at the top. Gray bars are commentary, animal and lab work, which cannot answer whether something helps patients.
Show as a table
| Design | Studies |
|---|---|
| Meta-analyses | 3 |
| Randomized trials | 7 |
| Crossover randomized trials | 1 |
| Other clinical trials | 2 |
| Cohort studies | 3 |
| Case-control studies | 1 |
| Cross-sectional studies | 1 |
| Surveys | 3 |
| Case reports | 5 |
| Narrative reviews | 26 |
| Animal and lab studies | 3 |
| Who was studied | Studies |
|---|---|
| People in clinical trials | 22 |
| People observed, not treated | 29 |
| Whole populations | 2 |
| Not classified | 7 |
Which cannabinoids have been studied for tics?
“Cannabis” in these studies means different things: THC, the compound that causes a high; CBD, which does not; products that mix the two; and prescription medicines made from or modeled on cannabinoids. A result for one does not carry over to another: the sleepiness of THC says nothing about a CBD-only oil, and CBD’s effect on liver enzymes says nothing about THC.
| Substance | What was studied | Design | What came out |
|---|---|---|---|
| Cannabis products (dispensary products are available with a medical card where your state allows) | |||
| THC | Tics in adults, alone or combined with PEA [18] | Small trials; open pilot | Tic scores fell in some studies; sleepiness, dry mouth, dizziness and fatigue were reported [18]. |
| CBD | Mainly as part of THC-CBD combinations [18] | Combination trials | The studies cited here did not test CBD on its own for tics. |
| THC + CBD oil | Six weeks in 22 adults with severe Tourette syndrome [3] | Crossover trial | Mixed results [3]. |
| Nabiximols (THC + CBD mouth spray) | Tics in adults, against placebo [18] | Randomized trials | 21.9% against 9.1% improved by a quarter, not a clear difference; more side effects [18]. not approved in the U.S. [19] |
| Prescription medicines (FDA-approved, by prescription, not through a card) | |||
| Dronabinol (Marinol, Syndros) | Not among the tic studies cited here | – | FDA-approved for other conditions, not for tics [19] [24]. |
| Nabilone (Cesamet) | Not among the tic studies cited here | – | FDA-approved for nausea from chemotherapy, not for tics [19]. |
| Cannabidiol (Epidiolex) | Not among the tic studies cited here | – | FDA-approved for certain seizure disorders, not for tics [19] [25]. |
Ways to use cannabis: what each form avoids
Cannabis is not only smoked. People also vape it, swallow it as capsules, gummies or oils, hold drops under the tongue or spray them inside the cheek, or put it on the skin. Each form avoids some risks and keeps others. The nabiximols trials used a spray inside the mouth and the THC/CBD trial an oil taken by mouth [18] [3]; no study here compared forms for tics. This section explains the differences; it does not recommend a form.
How is it used, or how would it be?
Choose the closest; most people combine more than one.
Specific to smoking
Joints, blunts, pipes and bongs burn plant material, and the smoke irritates the throat and lungs. The effect starts within minutes and is hard to measure in milligrams.
Specific to vaping and dabbing
Dry-herb vaporizers, oil pens and cartridges avoid burning, but hot vapor still travels the same airways. Concentrates used for dabbing (wax, shatter, rosin) are very strong, which makes the amount even harder to control.
Shared devices
A joint, pipe or vape passed between people also passes on colds and other infections.
Specific to edibles and capsules
Gummies, chocolates, drinks, capsules and swallowed oils avoid smoke and vapor. They take much longer to act and last longer, and the liver processes them before they reach the blood. The classic mistake is a second dose “because the first did nothing.”
Specific to tinctures and sprays
Drops and oils held under the tongue and sprays inside the cheek avoid the lungs and are measured by the drop or spray. A spray inside the mouth is the form the nabiximols trials used [18]. Part of each dose is still swallowed.
Specific to topicals and patches
Creams and balms act mainly where they are applied and do not reach the brain circuits behind tics. Transdermal patches are different: they deliver cannabinoids into the bloodstream, so their effects on the brain and on other medicines count like any other form.
Specific to prescription cannabinoids
Dronabinol, nabilone and Epidiolex are exact-dose medicines prescribed by a doctor and filled at a pharmacy, not bought with a medical card. None is approved for tics [19].
True of every form
- THC can cause sleepiness, dizziness and slowed thinking [18] [3].
- It can add to the sedation of tic medicines such as clonidine, guanfacine and antipsychotics [24] [15].
- Whatever reaches the blood is handled by the liver and can change levels of other medicines [25].
- No driving after using THC.
Choosing a form is a conversation for the appointment.
All forms as a table
| Form | What it avoids | What remains |
|---|---|---|
| Smoking | Delay before the effect | Smoke in the airways, shared devices, hard-to-measure amount, all effects of THC |
| Vaping & dabbing | Burning plant material | Hot vapor in the airways, very strong concentrates, shared devices, all effects of THC |
| Edibles & capsules | Smoke, vapor, shared devices | Slow, long effect, risk of a repeat dose, liver processing, interactions |
| Tinctures & sprays | Smoke, vapor, shared devices | Effects on the brain, partly swallowed dose, interactions |
| Topicals | Most effects on the brain | Skin reactions; no effect on the circuits behind tics |
| Transdermal patches | Smoke, vapor and swallowing | Effects on the brain, interactions, sleepiness |
| Prescription cannabinoids | Unknown product content | Sleepiness, dizziness, interactions; not approved for tics |
What science doesn’t know yet
The gaps are not a footnote here; they are much of the story. The researchers who reviewed these studies list the same problems again and again.
- Small studies that differ from one another. The 2026 review found wide differences in design, patients, products and the way tics were measured, with small samples, uncontrolled designs and a high risk of bias in most studies [18].
- Short courses and many dropouts. Treatment periods are short, many people stop early, and the larger studies do not agree with each other [3].
- The largest trial left doubts. CANNA-TICS treated 97 patients for 13 weeks [20]; at its lead site, 13% of patients learned or guessed whether they were on the real treatment, which can sway results [20]. Large blinded trials of cannabis are still missing [5].
- No long-term safety data and no settled dose. None of the studies here followed people for years, and there is no agreed product or dose for tics. Doses mentioned in studies are not advice.
- Mice are not people. Animal studies of cannabinoid receptors and tic-like behavior need human trials before they mean anything for patients [22] [21].
- Teenagers are barely studied. Tics peak in childhood, yet cannabis research is almost entirely in adults, and experts urge caution before extending it to adolescents [23].
Side effects and safety of cannabis for tics
Side effects were the clearest finding in the trials. In the 2026 review, almost everyone on nabiximols reported at least one, compared with most, but fewer, people on placebo [18]. Most were described as mild, but mild sleepiness on top of a sedating tic medicine is a different matter.
Sleepiness
Named most often with nabiximols and with THC plus PEA, and described as mild [18]. It adds up with sedating tic medicines.
Dry mouth
Reported in the same trials [18]. Bothersome rather than dangerous, and one more reason to keep water nearby.
Dizziness
Reported with nabiximols and THC plus PEA [18]. Standing up slowly matters more if you also take clonidine or guanfacine, which can lower blood pressure [15].
Fatigue
Daytime tiredness was reported [18], and it is hard to tell apart from the fatigue of suppressing tics or of broken sleep.
Slowed thinking and memory lapses
Slowed thinking, memory lapses and poor concentration were reported with active treatment [3] – a real cost for a student or anyone already managing ADHD.
Dependence and misuse
Reviewers list a risk of dependence and misuse among the precautions for cannabinoids [18]. It is one reason the physician asks how you would use it, not only whether.
Is it safe to drive with Tourette syndrome?
Having tics is not in itself a bar to driving. What matters is what the tics do at the wheel, and what the medicines do to alertness.
Driving with tics
Most people with Tourette syndrome can drive. Talk to your doctor if tics make you close your eyes, jerk your head or take a hand off the wheel, and check whether a tic medicine makes you drowsy.
Driving after THC
Do not drive after using THC, whatever the form and whether or not you hold a card. Sleepiness and dizziness were common in the trials [18], and impaired driving is illegal in every state.
Will cannabis interact with my tic medication?
Open each one. These are warnings from the official drug labels; the Tourette studies on this page did not test drug combinations, so there are no numbers here, and this is not a complete list.
Alpha-2 agonists (clonidine, guanfacine) mechanism only
Antipsychotics (aripiprazole, haloperidol and others) mechanism only
Aripiprazole can cause sleepiness and a drop in blood pressure on standing, and it is cleared by the liver enzymes CYP2D6 and CYP3A4 [16]. CBD is processed by CYP3A4 and CYP2C19 [25], so the physician checks how the two might affect each other. Sedation from THC can add to sedation from the antipsychotic [24].
Valproate clinical data
In the clinical program of prescription CBD (Epidiolex), rises in liver enzymes were more frequent when CBD was combined with valproate [25]. If you take both, liver blood tests are part of the plan.
Sedatives, sleeping pills and alcohol mechanism only
The labels of dronabinol and of prescription CBD both warn that alcohol and other drugs that slow the brain add to their sleepiness [25] [24]. Benzodiazepines and sleep aids belong on the list you bring. More on mixing cannabis and Xanax.
Many medicines at once (liver enzyme interactions) clinical data
CBD changes the levels of some medicines cleared by CYP3A4 and CYP2C19, and some medicines change CBD levels in turn; the Epidiolex label describes dose adjustments for such combinations [25]. If you take several prescriptions, for tics, ADHD, anxiety or sleep, the full list decides more than the diagnosis does.
Bring the complete list, prescriptions, over-the-counter sleep aids, supplements and anything taken only sometimes, to the appointment. Never stop a tic medicine on your own to try cannabis; some, such as guanfacine, need to be tapered rather than stopped at once [15].
Teens, pregnancy and who should not use cannabis for tics
For some people the answer is “not now” or “not at all,” whatever the tics. Trials in this field enroll adults and leave these groups out, so there is no evidence of safety for them.
- Children and teenagers – Tourette syndrome peaks in childhood, but cannabis research is almost entirely in adults, and experts urge particular caution in adolescents [23]. Any decision belongs with a pediatric neurologist. Under state law, a minor in a medical program needs a registered adult caregiver, usually a parent; see medical marijuana and minors.
- Pregnancy and breastfeeding – reviewers advise avoiding cannabis in pregnancy [10], and a long-running cohort linked late-pregnancy use to Tourette syndrome in the child (below).
- A history of psychosis – the dronabinol label calls for caution in people with psychiatric illness [24]. See cannabis and psychosis.
- Several sedating medicines already – alpha-2 agonists, antipsychotics, benzodiazepines or sleeping pills, which THC can add to [24] [15].
- Self-injurious tics without medical follow-up – tics that injure the eyes, neck or skin need a neurologist first [5].
Talk to a licensed physician about whether any of these apply
Is Tourette syndrome a qualifying condition for a medical card?
It depends on your state. Every medical cannabis program keeps its own list of qualifying conditions, and a physician has to match your diagnosis to that list, not to a symptom. Some programs name Tourette syndrome outright. Others do not use the name but cover conditions that often come with it, and some let a physician certify any condition they judge debilitating.
The lists change as legislatures and health departments update them, so the current wording for your state is the one that counts. The physician confirms it at the evaluation, using your records.
Tourette syndrome is named in your state
The simplest case. Bring a record of the diagnosis, a neurologist’s or pediatrician’s note, and the physician evaluates you against that listed condition.
A condition you also have is listed
Anxiety, chronic pain, insomnia or seizures may be on the list even where Tourette syndrome is not. What counts is a diagnosis in your records, not a symptom alone.
Neither is on the list
A card may not be available yet where you live. Some states let physicians certify other debilitating conditions or accept petitions to add new ones.
What else has a doctor diagnosed?
State lists name diagnoses, not symptoms: pick what is in your records.
Anxiety: several states list anxiety disorders or accept them under broader wording, and anxiety often comes with Tourette syndrome. Read anxiety and medical cannabis.
Chronic pain: the most widely listed condition across state programs, and common in Tourette syndrome. Read chronic pain and medical cannabis.
Insomnia: a diagnosed sleep disorder is listed in some programs. Read insomnia and medical cannabis.
Autism: some states list autism spectrum disorder, and tics are sometimes diagnosed alongside it. Read autism spectrum disorder and medical cannabis.
Seizures: seizure disorders are on most lists; note the valproate interaction above. Read seizures and medical cannabis.
None of these: then the decision rests on your state’s wording and the physician’s judgment. Start with your state’s medical marijuana laws, or browse all qualifying conditions.
Medical card or recreational purchase
In states with adult-use sales, adults can buy without a card. A card still changes several things, though the details are set state by state.
| Aspect | With a medical card | Recreational |
|---|---|---|
| Taxes | Often lower; some states waive part of the cannabis tax for patients | Full state and local cannabis taxes |
| Purchase and possession limits | Often higher; depends on your state | Set for adult-use buyers |
| Products | Medical dispensaries and, in some states, medical-only products | Adult-use product range |
| Age | Patient age rules set by each program, with a caregiver for minors | Adult-use age limit set by the state |
| Physician involvement | A licensed physician reviews your conditions and medicines | None |
| Document | State card or recommendation, recorded in a confidential registry | Government ID only |
Will a card save you money?
It can, but only where your state taxes patients less than recreational buyers, and the amount depends on your state’s tax rates and how much you buy. Weigh that against the evaluation fee and any state registration fee. The breakdown is in medical vs. recreational cannabis taxes, and the wider differences in medical and recreational cannabis compared.
What the program in your state involves
Qualifying is the first of two steps. In most states a physician’s recommendation is followed by registration with the state health department, which issues the card and enters you in a confidential patient registry; in a few, the recommendation itself is what a dispensary asks for. Purchases happen at licensed dispensaries, some of which deliver, and products there are lab-tested and labeled with their THC and CBD content.
Many state laws also let a patient name a registered caregiver who may buy and handle products on their behalf; for a minor, this is how a program works at all. Who qualifies and how to register is set by each state. Cards from one state are not automatically valid in another; see which states accept out-of-state cards. Legal status, possession limits, taxes and home cultivation are listed state by state on the laws and regulations pages.
Renewing your medical card
Cards and recommendations expire on a schedule your state sets. Renewal means a repeat evaluation: the physician reviews how the tics, your medicines and any side effects have changed and, if cannabis still makes sense, issues a new recommendation. Bring an updated medicine list and anything new from your neurologist. To start, choose your state from the list at the top of this page.
Legal protections: firearms, employment, privacy
Privacy: your medical records are protected under the HIPAA Privacy Rule [26], and state patient registries are confidential; dispensaries and law enforcement can usually check only whether a card is valid.
Firearms: federal law bars anyone who is an “unlawful user” of a controlled substance from having a firearm [27], and cannabis remains federally controlled, so a state card does not change the federal rule.
Employment: protections for card holders differ by state, and many employers can still enforce drug-free policies, especially in safety-sensitive jobs. Read your state’s rules on the laws and regulations pages.
What this means if you are considering it
A good evaluation is a conversation about the tics that bother you most, the medicines already in use and what would count as “better.” It goes faster and safer when the facts are on the table.
What to bring to the appointment
Tap each item as you get it ready.
Questions worth asking
- Which of my current medicines could interact, and what would we watch for?
- THC, CBD or both, and why that choice for my tics?
- How would we know within a few weeks whether it is helping?
- What should make me stop right away?
- Should my neurologist know, and who tells them?
An evaluation makes sense if
- You are an adult with a diagnosis in your records.
- Tics still interfere after behavioral therapy or standard medicines.
- Your full medicine list can be reviewed.
- Your state’s program covers your diagnosis or a related one.
It is not the right step if
- The hope is a cure or a quick fix.
- The tics are new and have not been assessed.
- You are pregnant or breastfeeding.
- There is a history of psychosis.
This page summarizes published research for education. It does not replace a neurologist’s or physician’s advice. Cannabis does not cure Tourette syndrome, and people who take several medicines face a higher risk of interactions.
How to get a medical card for Tourette syndrome online
Everything happens online, so there is nowhere to travel. Four steps take you from the first form to a card in your hand.
Fill in the intake form
Your state, your diagnoses and your current medicines. Have the record of the Tourette syndrome diagnosis ready to upload.
See a physician licensed in your state
A one-on-one appointment online. You agree on the time with the physician; keep an hour free rather than a minute.
Receive your signed recommendation
If the physician approves, the signed recommendation arrives in your account after the appointment.
Register with your state
Where required, you submit the recommendation to the state program, which reviews it and issues the card.
What you end up with
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
A recommendation from a physician licensed where you live, and, once your state registers it, a card that lets you buy at licensed dispensaries. Your documents stay in your account and documents, and how the medical card works explains the evaluation in detail.
Programs for veterans and for people with low income are available in some states.
Our physicians and medical review
Every appointment is one-on-one with a physician who holds an active license in your state, and the decision to recommend cannabis, or not, is theirs alone. This page was reviewed by the Dr. Weedy medical team: every number on it links to the study or agency it came from, and the list of sources sits at the end. The physicians who see patients are listed on our physicians page.
Pricing, what’s included and what if you are not approved
The evaluation fee for your state is shown before you pay, together with what it covers: the intake, the appointment with a licensed physician and, if approved, the signed recommendation in your account. A state registration fee, where one exists, is paid to the state separately. Whether a recommendation is issued is the physician’s medical decision; the terms for that case are on how the medical card works.
Questions people ask about Tourette syndrome and cannabis
What is the best cannabis for Tourette syndrome?
How many people have Tourette syndrome?
How often does Tourette syndrome occur, and who gets it?
Is Tourette syndrome curable?
There is no cure, but treatment helps manage tics, and for most people tics decrease during adolescence and early adulthood [1]. Cannabis has not been shown to cure it.
Can CBD alone help tics?
What about delta-8 THC or products sold without a card?
Delta-8 THC acts much like regular THC, with the same sleepiness and interaction concerns, and it has not been studied for tics in the research cited here. Products sold in shops and online may not be tested and labeled the way dispensary products are, so what is inside can differ from the label.
Do dispensaries need to know my diagnosis?
No. A dispensary checks that your card or recommendation is valid. The diagnosis stays between you, the physician and, where the state requires it, the state program.
Can I use my card in another state?
Sometimes. Reciprocity (one state honoring another state’s card) exists in some states and not others, and rules for visitors vary. Check which states accept out-of-state cards and traveling with cannabis before a trip.
What if my card is lost?
Most states let you request a replacement from the program that issued it. The steps are in what to do if your card is lost and the medical card FAQ.
How do I renew my medical card?
Cards expire on a schedule your state sets, and renewal means a repeat evaluation with your updated medicines and a new recommendation. See how the medical card works, or choose your state from the list at the top of this page.
How much does it cost, and what if I’m not approved?
The evaluation fee for your state is shown before you pay; a state registration fee, where one exists, is paid to the state separately. Whether a recommendation is issued is the physician’s medical decision. Details for both are on how the medical card works.
Is an online evaluation legitimate?
Yes, where state law allows telemedicine, a medical appointment held online, for medical cannabis evaluations. The appointment is with a physician licensed in your state, one-on-one, and the recommendation is the same document an in-person visit would produce.
Who finds out? Privacy, firearms and work
Privacy: your medical records are protected under the HIPAA Privacy Rule [26], and state patient registries are confidential.
Firearms: federal law bars an “unlawful user” of a controlled substance from having a firearm [27], and a state card does not change the federal rule.
Work: employment protections for card holders differ by state. Read your state’s rules on the laws and regulations pages.
Will cannabis interact with my tic medication?
It can. THC adds to the sleepiness of alpha-2 agonists and antipsychotics, and CBD shares liver enzymes with several of them [25] [24] [15] [16]. Each medicine is covered in will cannabis interact with my tic medication.
More research on cannabis and Tourette syndrome
This page cites a selection of studies. Our research library holds every study we track on cannabis and Tourette syndrome, from laboratory work to clinical trials, and lets you filter them by cannabinoid, study type and year.
- studies
- 130+
- in people
- 71
- clinical trials
- 24