Obsessive–compulsive disorder (OCD) is a mental disorder in which a person feels the need to perform certain routines repeatedly (called "compulsions"), or has certain thoughts repeatedly (called "obsessions"). The person is unable to control either the thoughts or activities for more than a short period of time.

Obsessive-Compulsive Disorder (OCD) is a common, chronic, and long-lasting disorder in which a person has uncontrollable, reoccurring thoughts (obsessions) and/or behaviors (compulsions) that he or she feels the urge to repeat over and over

Obsessive-compulsive disorder is a mental illness. It's made up of two parts: obsessions and compulsions. People may experience obsessions, compulsions, or both, and they cause a lot of distress. Obsessions are unwanted and repetitive thoughts, urges, or images that don't go away.

Each dimension includes obsessions and compulsions.

Four Types of OCD. Contamination & Washing. ... Doubt About Accidental Harm & Checking. ... Just Right OCD: Symmetry, Arranging, & Counting. ... Unacceptable Taboo Thoughts & Mental Rituals.