athetosis
Concise Oxford English Dictionary © 2008 Oxford University Press:
athetosis /ˌaθɪˈtəʊsɪs/
▶noun Medicine a condition in which abnormal muscle contraction causes involuntary writhing movements.
– derivatives
athetoid adjective,
athetotic adjective.
athetoid adjective,
athetotic adjective.
'athetosis' also found in these Oxford entries:

