Obsessive-compulsive behavior (OCD) is an anxiety disorder characterized by recurring, unwanted thoughts, sensations, or ideas (obsessions) that drive individuals to engage in repetitive behaviors or mental acts (compulsions). Severe OCD can cause significant distress and interfere with daily life.

While the exact causes of OCD are not fully understood, current theories suggest a combination of genetic, environmental, and neurobiological factors. Changes in the body’s natural chemistry or brain functions may contribute to the development of OCD. Other risk factors include stressful life events and co-occurring mental health disorders.