Observational StudySensorimotor and Psychosocial Trajectories in Adolescents With Tic Disorder

Individuals with tic disorders have lower quality of life, sensory and movement difficulties, and poorer mental, social, and physical health compared to the general population. Current clinical care for individuals with tic disorders is limited: no interventions are proven to prevent or stop the disorder exist, and most treatments focus solely on tics, though other symptoms often affect quality of life more than tics. To develop new treatments and improve care for people with tics, researchers need to better understand the different symptoms people experience and how the brain causes these symptoms.

Many individuals with tic disorders have sensory and movement symptoms other than tics. A common sensory symptom is increased sensitivity to common sensations, such as glare from sunlight, tags in shirt collars, and noises from passing cars. A common movement symptom is poor handwriting and/or poor coordination. In one study of adolescents with tic disorder, difficulty with hand coordination predicted tic severity 7.5 years later, suggesting that sensory and/or motor difficulties may be a risk factor for more severe tics later in life. Despite how common they are, much is unknown about sensory and motor difficulties experienced by people with tic disorders.

Additionally, most studies of people with tics enroll younger children. As a result, little is known about sensory, motor, and psychosocial development in adolescents with tics. Knowledge of sensory and motor difficulties in adolescents with tics is important to understand because, in other adolescent populations, such difficulties are associated with worse mental and social health and worse quality of life. Deepening insight into the sensory, motor, and psychosocial development of adolescents with tic disorders is crucial to identify causes and risk factors for poor health in this population.

The goals of this study are to measure sensory and motor symptoms and function in adolescents with tics and to compare them to adolescents without tics. The research team will enroll adolescents with tics and adolescents without tics to participate in the study. Adolescent participants will complete questionnaires, electroencephalogram (EEG) tasks, and other sensory and motor tasks at baseline (with 2 study visits occurring within 30 days of each other) and 2 years later (again, with 2 study visits, occurring within 30 days of each other). A parent or other adult who knows the adolescent well will also complete questionnaires as part of the study.