Kleptomania (impulsive stealing)

People with Kleptomania usually do not steal because they need the object stolen; they sometimes secretly replace the object after stealing it. They steal "for the thrill of stealing," and they don't want to get caught at it. To be diagnosed, a person must have the typical pattern: recurrent tension leading to the behavior, leading to relief or pleasure after performing the behavior. The stealing is not accounted for by an external motive like hunger or financial deprivation or vengeance, or accounted for better by another disorder of which stealing is a part (for example, Antisocial Personality Disorder or a manic episode). Kleptomania is rare overall, but more common in females than in males. It is obviously difficult to document the precise number of people with Kleptomania. People with Kleptomania often have another psychiatric disorder, often a mood disorder. Treatment is largely untested, and the disorder often persists despite many convictions of shoplifting. It may decrease as the individual ages, however. 

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Shoplifters Anonymous