Repetitive, seemingly driven, and nonfunctional motor behavior (e.g., hand shaking or waving, body rocking, head banging, mouthing of objects, self-biting, picking at skin or bodily orifices, hitting own body).
The behavior markedly interferes with normal activities or results in self-inflicted bodily injury that requires medical treatment (or would result in an injury if preventive measures were not used).
If Mental Retardation is present, the stereotypic or self-injurious behavior is of sufficient severity to become a focus of treatment.
The behavior is not better accounted for by a compulsion (as in Obsessive-Compulsive Disorder), a tic (as in Tic Disorder), a stereotypy that is part of a Pervasive Developmental Disorder, or hair pulling (as in Trichotillomania).
The behavior is not due to the direct physiological effects of a substance or a general medical condition.
The behavior persists for 4 weeks or longer.
Psych Central. (2013). Stereotypic Movement Disorder Symptoms. Psych Central. Retrieved on July 25, 2014, from http://psychcentral.com/disorders/stereotypic-movement-disorder-symptoms/
Symptom criteria summarized from:
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders, fifth edition. Washington, DC: American Psychiatric Association.
American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders, fourth edition. Washington, DC: American Psychiatric Association.
Last reviewed: By John M. Grohol, Psy.D. on 26 May 2013
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