Obsessive-compulsive disorder (OCD) is an anxiety disorder in which a person becomes trapped in a pattern of intrusive and unwanted thoughts and repeatedly performs tasks or rituals to get rid of the thoughts. Fear of contamination is one of the most common obsessions, and hand-washing and checking that something has been done are the most common compulsions.
In a person with obsessive-compulsive disorder, attempts to control his or her obsessions and resist the urge to perform certain compulsive behaviors may cause extreme anxiety or panic attacks.
Treatment includes medicines and counseling.
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