Hémichorée-hémiballisme et hyperglycémie non cétonique

Uncontrolled diabetes may be responsible for various neurological manifestations such as seizures and disorders of consciousness. A rare event is the emergence of involuntary movements, like chorea and hemiballismus. The mechanism explaining the occurrence of these abnormal movements during hyperglycemia without ketosis remains discussed. We describe a case of right hemichorea-hemiballismus with spontaneous hyperdensity in the left caudate and lenticular nucleus complicating hyperglycemia without ketosis.