A disorder of infancy, childhood, or adolescence characterized by repetitive, driven, nonfunctional, and potentially self-injurious motor behavior such as head banging, self-biting, or picking at the skin. The behavior may be associated with intellectual disability or a pervasive developmental disorder.
Motor behavior, persisting for at least 4 weeks, that is repetitive, often seemingly driven and nonfunctional to the extent that it interferes with normal activities or results in self-inflicted bodily injury sufficient to require medical treatment. The disorder cannot be accounted for by a compulsion, a tic, or hair pulling and is not due to the effects of a substance or a general medical condition.