Stereotypic movement disorder facts for kids
Stereotypic movement disorder (SMD) is a motor disorder with onset in childhood involving repetitive, nonfunctional motor behavior (e.g., hand waving or head banging), that markedly interferes with normal activities or results in bodily injury. The cause of this disorder is not known.
See also
In Spanish: Trastorno de movimientos estereotípicos para niños
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Stereotypic movement disorder Facts for Kids. Kiddle Encyclopedia.