Meyahealth
HomeGeneticsConditionTourette syndrome
Back to Condition
Tourette syndrome
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Condition

Tourette syndrome

Tourette syndrome is a complex disorder characterized by repetitive, involuntary movements or noises known as tics that typically emerge during childhood.

Overview

Tourette syndrome is a complex disorder involving repetitive, sudden, and involuntary movements or noises called tics. While severity varies over time, tics often become milder and less frequent in late adolescence and adulthood.

Symptoms

The disorder involves both motor and vocal tics:

  • Motor tics: Uncontrolled body movements. Simple motor tics include eye blinking, shoulder shrugging, or nose twitching. Complex motor tics involve multiple muscle groups, such as jumping, kicking, hopping, or spinning.
  • Vocal tics: Outbursts of sound. Simple vocal tics include grunting, sniffing, and throat-clearing. Complex vocalizations include echolalia (repeating others' words), palilalia (repeating one's own words), or, less commonly, coprolalia (involuntary use of obscene language).

Individuals with Tourette syndrome are also at risk for ADHD, OCD, anxiety, depression, and sleep problems.

Causes & Risk Factors

The exact cause is likely a combination of genetic and environmental factors. Scientists believe tics may result from changes in brain chemicals that control voluntary movements.

While variants in the SLITRK1 gene have been identified in a small number of people, this association is not confirmed, as most individuals with the syndrome do not have this variant. Researchers suspect other, unidentified genes are involved.

Associated Gene

  • SLITRK1

Inheritance

The inheritance pattern is unclear. While the condition can cluster in families, it is not caused by a single gene mutation. Almost all cases likely result from a variety of genetic and environmental factors.

Frequently Asked Questions

diagnosis of Tourette syndrome requires the presence of multiple motor tics and at least one vocal tic, though not necessarily at the exact same time, persisting for more than 12 consecutive months. The tics must begin before age 18 and cannot be attributable to medication, substance use, or an underlying medical illness. Transient or provisional tic disorders, by contrast, involve motor or vocal tics that have been present for less than a year.
The natural clinical course usually involves tics peaking in frequency and severity between ages 10 and 12. During late adolescence and early adulthood, approximately one-third of individuals experience complete resolution of tics, and another third see a significant reduction to mild, manageable levels. Only a minority continue to experience moderate to severe tics into older adulthood, though co-occurring issues like ADHD or anxiety may require independent long-term management.
The first-line non-pharmacologic treatment is Comprehensive Behavioral Intervention for Tics (CBIT), which incorporates Habit Reversal Training. CBIT teaches individuals to recognize the premonitory urge preceding a tic and engage in an incompatible voluntary competing response until the urge subsides. Psychoeducation, stress management, cognitive behavioral therapy for co-occurring anxiety or OCD, and classroom accommodations also play major roles in symptom control.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

Meyahealth

Ⓒ 2026. All rights reserved by MEYA

About UsTerms & PolicyFAQ