"Obsessions are persistent, unwanted thoughts about a certain topic. Compulsions are repetitive behaviors or mental acts which one feels compelled to perform. People diagnosed with obsessive compulsive disorder (OCD) often act out compulsions in response to their obsessions. For example, a person may constantly worry their house will get robbed. To manage their anxiety, the person checks the locks on their doors a dozen times a night. This behavior cannot realistically prevent a robbery or break-in, but the person feels severe distress if they don’t follow through. In the United States, around 1.6% of adults will experience OCD in their lifetimes. The condition usually begins around age 19, although a quarter of cases start before age 14. OCD can occur in people of all ages, economic classes, and ethnic groups. If left untreated, OCD can last a lifetime. Symptoms may interfere with one’s work, relationships, and general well-being. A therapist can help people manage their symptoms and learn coping skills.In the United States, around 1.6% of adults will meet the criteria for obsessive compulsive disorder (OCD) in their lifetimes. Obsessions are intrusive thoughts that cause distress. Compulsions are repetitive actions a person feels they must do. Someone with OCD has both obsessions and compulsions that interfere with everyday life. Although obsessive-compulsive behaviors can be debilitating, the condition is treatable. People with OCD can receive help through therapy. "