Obsessive-compulsive disorder is an anxiety disorder with two key parts: obsessions and compulsions.
Obsessions are intrusive and unwelcome images, urges, thoughts or doubts that repeatedly appear in your mind. They interrupt your thinking and make you feel very uncomfortable or anxious.
Compulsions are activities you feel you have to do to reduce the discomfort caused by the obsessive thoughts. If you don’t act on the compulsions, your anxiety or mental discomfort becomes distressing and unmanageable.
People often think OCD just means that you like to wash your hands a lot or you like to be very neat. But obsessions and compulsions can be very difficult to live with. Not everyone with OCD has obsessions and compulsions related to cleanliness.