Obsessive-compulsive neurosis; OCD
An example of obsessive-compulsive disorder is excessive, repeated handwashing to ward off infection.
The person usually recognizes that the behavior is excessive or unreasonable.
Your own description of the behavior can help diagnose the disorder. A physical exam can rule out physical causes, and a psychiatric evaluation can rule out other mental disorders.
Questionnaires, such as the Yale-Brown Obsessive Compulsive Scale, can help diagnose OCD and track the progress of treatment.
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