Disorders whose essential features are the failure to resist an impulse, drive, or temptation to perform an act that is harmful to the individual or to others. Individuals experience an increased sense of tension prior to the act and pleasure, gratification or release of tension at the time of committing the act.
An activity distinguished primarily by an element of risk in trying to obtain a desired goal, e.g., playing a game of chance for money.
Compulsion to pull out one's hair.