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Obsessive-compulsive disorder (OCD) is a disorder in which people have recurring, unwanted thoughts, ideas, or sensations (obsessions). To get rid of the thoughts, they feel driven to do something repetitively (compulsions). Repetitive behaviors, such as hand washing/cleaning, checking on things, and mental acts like (counting) or other activities, can significantly interfere with a person’s daily activities and social interactions.

Many people without OCD have distressing thoughts or repetitive behaviors. However, these do not typically disrupt daily life. For people with OCD, thoughts are persistent and intrusive, and behaviors are rigid. Not performing the behaviors commonly causes great distress, often attached to a specific fear of dire consequences (to self or loved ones) if the behaviors are not completed. Many people with OCD know or suspect their obsessional thoughts are not realistic; others may think they could be true. Even if they know their intrusive thoughts are not realistic, people with OCD have difficulty disengaging from obsessive thoughts or stopping compulsive actions.

A diagnosis of OCD requires the presence of obsessional thoughts and/or compulsions that are time-consuming (more than one hour a day), cause significant distress, and impair work or social functioning. OCD affects 2-3% of people in the United States, and among adults, slightly more women than men are affected. OCD often begins in childhood, adolescence, or early adulthood. Some people may have some symptoms of OCD but not meet full criteria for this disorder.

American Psychiatric Association (2024, January 1). What Is OCD? Retrieved January 8, 2024, from

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