12 studies were found.

1.		Recruiting	Characterization of Childhood-Onset Obsessive-Compulsive Disorder Condition: Obsessive-Compulsive Disorder
2.		Recruiting	Serotonin Transporters in Obsessive-Compulsive-Related Disorders Condition: Obsessive-Compulsive Disorder
3.		Recruiting	Evaluation and Follow-up of Individuals with Obsessive-Compulsive Disorder and Related Conditions Conditions: Anorexia Nervosa; Obsessive Compulsive Disorder; Tourette Syndrome; Trichotillomania
4.		Recruiting	Phase II Randomized Study of Intravenous Versus Oral Clomipramine in Patients With Obsessive Compulsive Disorder Condition: Obsessive-Compulsive Disorder
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	Cognitive Behavioral Therapy Plus Drug Treatment for Obsessive Compulsive Disorder Condition: Obsessive-Compulsive Disorder
7.		Recruiting	Deep Brain Stimulation for Treatment-Resistant Obsessive Compulsive Disorder Condition: Obsessive-Compulsive Disorder
8.		Recruiting	Treatment of Compulsive Hoarding Condition: Obsessive-Compulsive Disorder
9.		Recruiting	Genetics of Obsessive-Compulsive Disorder Condition: Obsessive Compulsive Disorder
10.		Recruiting	Treatment of Obsessive Compulsive Disorder in Children Condition: Obsessive Compulsive Disorder
11.		Recruiting	Family Based Treatment of Early Childhood Obsessive Compulsive Disorder (OCD) Condition: Obsessive Compulsive Disorder (OCD)
12.		Recruiting	Brain Imaging of Childhood Onset Psychiatric Disorders, Endocrine Disorders and Healthy Children Conditions: Autoimmune Disease; Congenital Adrenal Hyperplasia; Healthy; Mental Disorder Diagnosed in Childhood; Neurologic Manifestations