Write 10 pages with APA style on Obsessive-compulsive disorder. Compulsions are defined as repetitive behaviors, or mental acts, that serve to prevent or alleviate anxiety or distress. Compulsions may take the form of behavioral acts such as hand washing, checking, and ordering. They may also constitute mental acts such as praying, counting, and repeating words silently. Although most individuals diagnosed with OCD present with both obsessions and compulsions, only one of these symptomatic types is necessary for diagnosis. To be classified as obsessions, such thoughts must be considered intrusive and repugnant by the person experiencing them, and, when present, these symptoms must lead to marked distress and anxiety. As alluded to, compulsions are performed with the intent of ameliorating the discomfort associated with obsessions (APA 456-463). Most individuals with OCD recognize that their obsessions and/or compulsions are excessive or unreasonable. There is a smaller subset of individuals, however, who have difficulty recognizing the irrationality of their concerns, but such people continue to meet the diagnostic criteria for OCD, not another mental disorder.