impulse control disorder

n.
  1. Any of various types of mental disorders, such as substance abuse and pathological gambling, characterized by a tendency to gratify an immediate desire or impulse regardless of the consequences to one's self or to others.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.