Coprophenomena in Tourette syndrome.

Area of Science:

• Neuroscience
• Clinical Psychology
• Genetics

Background:

• Tourette syndrome is a neurological disorder characterized by involuntary motor and vocal tics.
• Coprophenomena, including coprolalia (involuntary swearing) and copropraxia (involuntary inappropriate gestures), are often feared but poorly understood aspects of Tourette syndrome.
• Prevalence and associated factors of coprophenomena require further investigation for improved patient management.

Purpose of the Study:

• To determine the prevalence of coprophenomena in a large international cohort of individuals with Tourette syndrome.
• To investigate the associations between coprophenomena and other Tourette syndrome symptoms and behaviors.
• To explore the onset and persistence patterns of coprophenomena.

Main Methods:

• Descriptive study utilizing data from the Tourette Syndrome International Database Consortium.
• Analysis of a specialized data collection form from 597 new Tourette syndrome patients across 15 international sites.
• Statistical examination of lifetime prevalence, age of onset, and correlations with other symptoms.

Main Results:

• Lifetime prevalence of coprolalia was 19.3% in males and 14.6% in females; copropraxia was 5.9% in males and 4.9% in females.
• Coprophenomena onset averaged around age 11, typically 5 years after tic onset, and were initial symptoms in 11-12% of cases.
• Strong correlations were found between coprophenomena onset and tics, smelling non-food objects, and spitting; robust associations existed with non-tic repetitive behaviors and inappropriate sexual behavior.

Conclusions:

• Coprophenomena affect approximately one in five individuals with Tourette syndrome, contrary to common fears.
• Early onset of coprophenomena does not predict longer persistence.
• Further prospective research is essential for better counseling and prognostic information regarding coprophenomena in Tourette syndrome.