stereotypic movement disorder
stereotyped repetitive movements NOS (finding)
exact
Motor behavior that is repetitive, often seemingly driven, and nonfunctional. This behavior markedly interferes with normal activities or results in severe bodily self-injury. The behavior is not due to the direct physiological effects of a substance or a general medical condition. (dsm-iv, 1994)
MONDO:0000592
specific developmental disorder
is_a