Obsessive-compulsive disorder, Tourette Syndrome Disorder and Trichotillomania co-occur at significant rates in youth, so clinicians often must develop treatment plans that address one or all of these conditions. Research has demonstrated that behavioral approaches are the psychological treatment of choice for these conditions and hold considerable promise as effective alternatives to pharmacologic interventions. Review the state-of-the-art behavioral assessment and treatment of these conditions and learn how to develop and use a behavioral treatment plan. In addition, you learn current pharmacologic treatments for these conditions and the efficacy of these treatments compared to behavioral treatment.