problems; another cluster with impaired movement control and motor planning). Presence
of other disorders does not exclude develo pmental coordination disorder but may make
testing more difficult and may independently interfere with th e execution of activities of
daily living, thus requiring examiner judgment in ascribing impairment to motor skills. 
Stereotypic Movement Disorder
Diagnostic Criteria 307.3 (F98.4)
A. Repetitive, seemingly driven, and apparently purposeless motor behavior (e.g., hand
shaking or waving, body rocking, head banging, self-biting, hitting own body).
B. The repetitive motor behavior interferes wit h social, academic, or other activities and
may result in self-injury.
C. Onset is in the early developmental period.
D. The repetitive motor behavior is not attributable to the physiological effects of a sub-
stance or neurological condition and is no t better explained by another neurodevel-
opmental or mental disorder (e.g., trichotillomania [hair-pulling disorder], obsessive-
compulsive disorder).
Specify if:
With self-injurious behavior (or behavior that would result in an injury if preventive
measures were not used)
Without self-injurious behavior
Specify if:
Associated with a known medical or genetic condition, neurodevelopmental dis-
order, or environmental factor  (e.g., Lesch-Nyhan syndrome, intellectual disability
[intellectual developmental disorder], intrauterine alcohol exposure)