12 studies were found.

1.		Recruiting	Study of Tics in Patients with Tourette's Syndrome and Chronic Motor Tic Disorder Conditions: Tourette Syndrome; Tic Disorders
2.		Recruiting	Brain Activation in Vocal and Motor Tics Conditions: Tourette's Syndrome; Chronic Motor Tic Disorder; Chronic Motor Vocal Disorder
3.		Recruiting	Brain Dynamics Involved in Generating Tics and Controlling Voluntary Movement Conditions: Tourette Syndrome; Tic Disorders
4.		Recruiting	Timing of Voluntary Movement in Patients with Tourette Syndrome and Chronic Tic Disorder Conditions: Tourette Syndrome; Tic Disorders
5.		Recruiting	Preventive Measures for Childhood-Onset Obsessive-Compulsive Disorder and Tic Disorders (PANDAS Subgroup) Conditions: Chorea; Mental Disorder Diagnosed in Childhood; Obsessive Compulsive Disorder; Streptococcal Infection; Tic Disorder
6.		Recruiting	Study of GABA-A receptors in the Generation of Tics in Patients with Tourette's Syndrome Condition: Tourette Syndrome
7.		Recruiting	Botulinum Toxin for the Treatment of Involuntary Movement Disorders Conditions: Chorea; Drug Induced Dyskinesia; Movement Disorder; Muscular Disease; Tic Disorder
8.		Recruiting	Magnetic Resonance Spectroscopy to Evaluate Tourette's Syndrome Condition: Tourette Syndrome
9.		Recruiting	Evaluation and Follow-up of Individuals with Obsessive-Compulsive Disorder and Related Conditions Conditions: Anorexia Nervosa; Obsessive Compulsive Disorder; Tourette Syndrome; Trichotillomania
10.		Recruiting	Central Mechanisms in Speech Motor Control Studied with H215O PET Conditions: Communication Disorder; Healthy; Stuttering; Tourette Syndrome; Voice Disorder
11.		Recruiting	Brain Tissue Collection for Neuropathological Studies Conditions: Bipolar Disorder; Huntington Disease; Schizophrenia; Tourette Syndrome; Dementia
12.		Recruiting	Characterization of Childhood-Onset Obsessive-Compulsive Disorder Condition: Obsessive-Compulsive Disorder