A neurologic sign
Synkinesia means"move together." normal in the immature nervous system of an infant/young child.
When it persists, it's an invaluable diagnostic sign for adhd
. No adhd medication causes synkinesia. The answer above is defining dyskinesia
, which means "bad movements." here's one of 100's of articles on the subject: dev med child neurol. 2006;48:165–169; doi:10.1017/s001216220600375.