Kleptomania
Kleptomania is characterized by the recurrent failure to resist impulses to steal objects not needed for personal use or monetary value. Just before the theft, the patient experiences increasing tension. At the time of theft, the patient feels gratification, pleasure or relief. These thefts are not committed out of anger or revenge, nor in response to delusions or hallucinations.
See DSM-IV-TR 312.32 Kleptomania