Adults can and do develop tics, though the pathways differ from the childhood-onset tic disorders most people think of. Classic Tourette syndrome almost always begins in childhood, but tics that first appear in adulthood have a range of causes: medications, brain injuries, infections, autoimmune conditions, and a category of functional neurological symptoms that surged during the COVID-19 pandemic. In many cases, what looks like a brand-new tic disorder in an adult turns out to be the return of childhood tics the person barely remembers having.
When “New” Adult Tics Are Really Old Ones Coming Back
One of the more surprising findings in the research on adult-onset tics is how often they are not truly new. The largest study dedicated to adult-onset tic disorders examined 22 patients who arrived at a movement disorders clinic with what appeared to be new tics. After careful questioning, roughly 41 percent turned out to have a history of childhood tics they had forgotten about or never recognized as tics in the first place. Some of these patients were in their twenties and thirties when tics resurfaced, but three were in their early sixties, meaning tics had stayed dormant for 40 years or more before returning.1PubMed Central. How Much Do We Know about Adult-onset Primary Tics? Prevalence, Epidemiology, and Clinical Features
This matters because if you develop tics as an adult, one of the first things a specialist will try to figure out is whether something similar happened when you were young. Childhood tics are common enough that mild ones can easily go unnoticed, especially if they were simple movements like blinking or throat-clearing that a parent wrote off as a habit. A tic that disappeared at age 10 and reappears at age 35 looks brand-new to the person experiencing it, but from a medical standpoint it is a recurrence of a known condition, not a fresh one. That distinction shapes what kind of workup is needed and what treatment is likely to help.
Genuinely new primary tic disorders do appear in adults on rare occasion. Case reports describe Tourette syndrome with onset in late life, which some researchers argue represents a previously unrecognized variety of the disorder rather than a recurrence.2PubMed Central. Late-Life Tourette Syndrome Is a Cause of Unexpected Cursing in the Elderly These cases are unusual enough to be published individually, which tells you something about how rare they are.
Medical Conditions That Trigger Tics in Adults
When tics genuinely begin for the first time in adulthood, the medical term is “secondary tics” or “tourettism,” meaning the tics are a symptom of something else rather than a standalone tic disorder. Several categories of medical events can set them off.
Stroke is one. A handful of case reports describe patients developing tics after strokes that hit the basal ganglia, a group of brain structures involved in movement control.3PubMed Central. Movement Disorders after Stroke in Adults: A Review In one case, a patient developed a repetitive vocal sound within three weeks of a stroke affecting the left caudate nucleus, a specific part of the basal ganglia.4PubMed. Adult onset simple phonic tic after caudate stroke Post-stroke tics are rare, but they are well-documented enough that clinicians are aware of the connection.
Traumatic brain injury is another recognized trigger. A review of reported cases found 25 patients who developed tics after TBI, and 22 of them were adults.5PubMed Central. A Review of Tics Presenting Subsequent to Traumatic Brain Injury The time between injury and tic onset varies widely. In one case, a 19-year-old with no prior tic history developed both motor and vocal tics a year after a road accident, and imaging showed damage to the basal ganglia.6PubMed. Tics after traumatic brain injury Head trauma has been recognized as an infrequent cause of adult-onset tic disorder, with variable timing between injury and symptom onset and unpredictable response to treatment.7PubMed. New-onset tic disorder following circumscribed brain injury
Infections and autoimmune conditions affecting the brain can also produce tics. A literature review found reports of tics in patients with multiple types of encephalitis, including autoimmune encephalitis and infections from common viruses like herpes simplex all the way to prion diseases. Tics most commonly showed up after the acute illness, and basal ganglia involvement was frequently observed.8PubMed Central. Tics in patients with encephalitis More rarely, tics have been reported as a feature of neurodegenerative conditions like Huntington’s disease, where they can appear as blinking, facial contractions, or jerking movements.9PubMed Central. Tics as an initial manifestation of juvenile Huntington’s disease: case report and literature review
The thread connecting these different causes is the basal ganglia. Damage or disruption to these structures, whether from a clot, a blow to the head, or inflammation from an immune attack, can produce tics regardless of the person’s age. This is why new-onset tics in an adult often prompt brain imaging: the tics themselves are the symptom, and the doctor needs to find out what caused the disruption.
Medications That Can Cause Tics
Drug-induced tics are worth their own discussion because they are potentially reversible and because the culprit medications are widely prescribed. Antipsychotics, particularly older-generation ones, can cause what are called tardive syndromes after prolonged use. These include tardive tics, which look and feel like ordinary tics but are a side effect of the medication’s long-term impact on dopamine pathways. Stimulants like methylphenidate, commonly used for ADHD, have also been linked to new tic onset or worsening of existing tics because they increase dopamine activity.10PubMed. Tics and other stereotyped movements as side effects of pharmacological treatment
If you are an adult who started a new medication and then noticed repetitive movements or vocalizations you did not have before, this is worth bringing up with your prescribing doctor. Tardive tics from antipsychotics can persist even after the drug is stopped, so early recognition matters. Stimulant-related tics, by contrast, tend to improve when the dose is lowered or the drug is changed, though the relationship between stimulants and tics is more complicated than the simple “stimulants cause tics” narrative suggests.
The Pandemic-Era Wave of Functional Tic-Like Behaviors
Starting in 2020 and peaking in 2021, clinics around the world saw a sharp increase in adolescents and young adults showing up with sudden-onset tic-like movements. These were not typical Tourette syndrome. The movements came on rapidly, were often severe, and disproportionately affected teenage girls and young women, a demographic profile almost opposite to classic childhood tic disorders, which skew heavily male.11PubMed Central. Functional Tic-like Behaviors: From the COVID-19 Pandemic to the Post-Pandemic Era
Researchers identified these as functional tic-like behaviors, meaning the movements are real and involuntary but are produced by the brain’s functional processes rather than the neurological circuitry that drives primary tic disorders. A study comparing patients with rapid-onset tic-like behaviors to those with established Tourette syndrome found that the functional group was younger on average (about 20 versus 39), had a later age at symptom onset (around 15 versus 10), and was overwhelmingly female. They also had higher motor and vocal tic severity scores and were more likely to have complex arm and hand movements, complex vocal tics, and coprolalia. Scores on mental health measures were significantly higher across the board, and depression diagnoses were more common.12PubMed Central. Rapid onset of functional tic-like behaviours in young adults during the COVID-19 pandemic
Social media, particularly TikTok, became a focus of clinical concern. Many of the tic videos posted on these platforms were misleading, reinforced tic-like behaviors, or perpetuated false beliefs about Tourette syndrome. Researchers noted that this content likely contributed to the rapid spread of functional tic-like behaviors, though pandemic-related anxiety, social isolation, and increased screen time were also contributing factors.13PubMed Central. TikTok Tourette’s: Are We Witnessing a Rise in Functional Tic-Like Behavior Driven by Adolescent Social Media Use? One clinical series concluded that social media may contribute to the spread of functional neurological symptoms in a way that previously required physical proximity, essentially updating the concept of mass psychogenic illness for the internet age.14PubMed Central. Tics and TikTok: Functional Tics Spread Through Social Media
This phenomenon is relevant to adults because, while the peak age was mid-to-late adolescence, many patients were in their twenties. If you are an adult who developed sudden, dramatic tic-like movements during or after the pandemic, functional tic-like behavior is a real diagnostic possibility, and it is treated differently from primary tic disorders.
How Functional Tics Differ from Primary Tic Disorders
The distinction between functional tics and primary tics matters because the conditions respond to different treatments. Clinically, they can look quite similar at first glance, but there are patterns specialists rely on. When researchers compared Tourette syndrome patients to those with functional tics, they found that Tourette patients were more often male, had a younger age at both onset and evaluation, and had more facial tics like eye blinking and jaw movements. Complex motor tics and simple vocal tics (like sniffing or grunting) were more common in Tourette syndrome. However, complex vocal tics, including the kind of elaborate phrases that get attention on social media, occurred at similar rates in both groups.15PubMed Central. Contrasting features between Tourette syndrome and secondary tic disorders
One of the most useful clinical markers is the premonitory urge, a building sensation of tension or discomfort that precedes a tic and is temporarily relieved by performing it. Most people with primary tic disorders experience these urges, often becoming aware of them around age 10, typically a few years after their tics began.16PubMed Central. Premonitory urge in tic disorders – a scoping review Functional tic-like behaviors tend not to have this premonitory urge, or if patients describe something preceding the movement, it is often a different kind of sensation. The presence or absence of a recognizable urge-then-tic cycle is one clue doctors use, though it is not the only one. Other red flags for functional tics include very sudden onset, rapid progression from zero tics to dozens of different movements in days, and movements that look effortful or elaborate from the start rather than building gradually from simple ones.
Comorbid psychiatric conditions also differ. In adults with primary tic disorders, obsessive-compulsive behavior tends to be the most common accompanying condition, which contrasts with childhood-onset cases where ADHD dominates. This difference in comorbidity patterns has led some researchers to suggest that adult-onset primary tics may involve a somewhat different underlying process than childhood-onset ones.17PubMed Central. How Much Do We Know about Adult-onset Primary Tics? Prevalence, Epidemiology, and Clinical Features – Section: Comorbidities Functional tic-like behaviors, by contrast, tend to come bundled with anxiety and depression rather than OCD or ADHD.12PubMed Central. Rapid onset of functional tic-like behaviours in young adults during the COVID-19 pandemic
Treatment Options for Adults with Tics
Treatment depends heavily on whether the tics are primary, secondary, or functional, but behavioral therapy has become the first-line recommendation across the board for primary tic disorders. The most studied approach is Comprehensive Behavioral Intervention for Tics, or CBIT, which teaches patients to recognize the urge that precedes a tic and respond with a competing physical action instead. A large randomized trial of 161 adults with chronic tic disorders tested an internet-delivered version of CBIT and found that it produced meaningful reductions in tic severity compared to a placebo intervention. The difference between the groups grew over time, becoming clearly significant at three and six months after treatment ended.18PubMed Central. ONLINE-TICS: Internet-Delivered Behavioral Treatment for Patients with Chronic Tic Disorders A pilot study of group-based CBIT found significant reductions in tic severity with large effect sizes that held steady at one-year follow-up, suggesting the gains are durable.19PubMed. Group-based comprehensive behavioral intervention for tics (CBIT) for adults with Tourette syndrome or chronic tic disorders: A pilot study
Access to CBIT has historically been a problem because there are not enough trained therapists. Telehealth versions are closing that gap. A feasibility study of tele-delivered CBIT found that about 60 percent of adult patients showed a positive treatment response, with a medium-to-large effect size on tic severity scores.20PubMed. Evaluating the feasibility, acceptability, and preliminary effectiveness of tele-comprehensive behavior therapy for tics (teleCBIT) for Tourette syndrome in youth and adults The internet-delivered version from the larger trial was found to be not inferior to face-to-face CBIT, which is significant for adults who live far from specialist centers.18PubMed Central. ONLINE-TICS: Internet-Delivered Behavioral Treatment for Patients with Chronic Tic Disorders
For functional tic-like behaviors, the treatment landscape looks different. SSRIs and cognitive behavioral therapy targeting the underlying anxiety and depression were the most commonly used treatments in a prospective follow-up of patients with rapid-onset functional tic-like behaviors.21PubMed Central. Prognosis of rapid onset functional tic-like behaviors: Prospective follow-up over 6 months The logic is straightforward: if the tic-like movements are driven by psychological distress, treat the distress. This approach is fundamentally different from CBIT, which targets the urge-tic cycle directly.
On the medication side for primary tics, the evidence is thinner than you might expect. A meta-analysis of randomized controlled trials looking at VMAT2 inhibitors, a class of drugs that reduce dopamine signaling and were expected to help with tics, found no clinically meaningful effect on tic symptoms. The drugs also came with worse tolerability and higher dropout rates compared to placebo.22PubMed. Efficacy and Tolerability of Vesicular Monoamine Transporter Type 2 Inhibitors in the Treatment of Tic Disorders Other medications like certain antipsychotics and alpha-agonists are used in practice, but behavioral therapy remains the treatment with the cleanest evidence behind it.
Deep Brain Stimulation for Severe, Treatment-Resistant Cases
For the small percentage of adults whose tics are severe enough to be disabling and have not responded to behavioral therapy or medication, deep brain stimulation is an option that has been studied with growing interest. DBS involves implanting electrodes in specific brain regions and delivering continuous electrical pulses. A meta-analysis found that DBS led to significant reductions on tic severity scales across published studies.23Neurotherapeutics. Efficacy of deep brain stimulation for Tourette syndrome and its comorbidities: A meta-analysis Earlier reviews estimated the average improvement at around 40 percent on tic severity measures, though most of the evidence comes from case series and small cohorts rather than large controlled trials.24PubMed Central. Deep brain stimulation in Tourette’s syndrome: evidence to date
DBS is not a first-line treatment by any stretch. It involves brain surgery with all the attendant risks, and it requires ongoing device management. But for adults with tics that have persisted since childhood and remained severe into adulthood, it represents a real option. Case reports have documented good postoperative control of both tics and accompanying obsessive-compulsive behavior after DBS targeting the internal segment of the globus pallidus.25PubMed Central. Deep brain stimulation of anteromedial globus pallidus internus for severe Tourette syndrome
The Psychosocial Weight of Adult-Onset Tics
One aspect of adult tics that gets less clinical attention than it deserves is how disruptive they are socially and professionally. A qualitative study interviewing people with Tourette syndrome, their caregivers, and their healthcare providers found that widespread misunderstanding and social exclusion led to psychosocial challenges that were often more disruptive than the tics themselves.26SpringerLink. Beyond the Tics: Experiences of Stigma and Psychosocial Impact in Tourette Syndrome Participants described encountering stereotypes, limited public awareness, and environments that were not set up to accommodate visible neurological differences.
For adults who develop tics for the first time, the social disruption can feel particularly jarring. You have spent decades interacting with the world without this feature, and suddenly you are producing movements or sounds that draw attention, confuse coworkers, or provoke misguided concern. Adults with new-onset tics frequently report that the anxiety about having a tic in a meeting or public setting becomes its own source of stress, which, in a cruel feedback loop, can make the tics worse. Unlike children who grow up learning to manage their tics alongside developing their social identities, adults have to retrofit coping strategies into lives and careers that were already fully formed.
Understanding whether your tics are primary, secondary, or functional is not just a medical curiosity. It shapes what treatment will help, how the tics are likely to evolve over time, and what, if anything, needs further investigation. If you develop tics as an adult, a neurologist experienced with movement disorders is the right starting point. The question is not just “why is this happening” but “what kind of tic is this,” because the answer determines everything that follows.