Obsessive Compulsive Disorder (OCD) is a type of anxiety disorder characterized by the presence of obsessions and/or compulsions that the child feels unable to control and that are severe enough to interfere with the activities of daily life. Obsessions are repeated, unwanted thoughts; compulsions are repeated, purposeless behaviors, performed to relieve the anxiety caused by the obsessive thoughts. Unlike adults, children do not always have the necessary cognitive skills or life experience to recognize that the obsessions or compulsions are excessive or unreasonable. When obsessive thoughts become so frequent or intense or rituals become so extensive that they interfere with functioning, the diagnosis of Obsessive Compulsive Disorder (OCD) is considered.