Obsessive Compulsive Disorder (OCD) is a disorder that is characterized by the presence of obsessive thoughts or intrusive images, compulsive behaviors or the combination of obsessions and compulsions. Obsessive thoughts/images/memories are intrusive and inappropriate and cause an individual significant anxiety and distress. Compulsions are repetitive behaviors (e.g., hand washing, putting objects in order, checking) or mental acts (e.g., praying or counting) that a person feels compelled to perform in an attempt to minimize feelings of anxiety and discomfort.