Nonketotic Hyperglycemic Hemichorea

A 78 year old man with type 2 diabetes presented with a 1 week history of involuntary left-sided hemiballistic movements. Laboratory tests revealed severe hyperglycemia (glucose: 159 mg/dL, HbA1c: 17%) without ketosis. Imaging showed increased density in the right basal ganglia. After ruling out stroke, infection, and autoimmune causes, the patient was diagnosed with nonketotic hyperglycemic hemichorea a rare condition linked to hyperglycemia and basal ganglia abnormalities. Symptoms resolved within 48 hours of neuroleptic treatment and glycemic control. The case underscores the importance of recognizing this reversible neurological complication of uncontrolled diabetes

A 78 year old man with type 2 diabetes presented with a 1 week history of involuntary left-sided hemiballistic movements. Laboratory tests revealed severe hyperglycemia (glucose: 159 mg/dL, HbA1c: 17%) without ketosis. Imaging showed increased density in the right basal ganglia. After ruling out stroke, infection, and autoimmune causes, the patient was diagnosed with nonketotic hyperglycemic hemichorea a rare condition linked to hyperglycemia and basal ganglia abnormalities. Symptoms resolved within 48 hours of neuroleptic treatment and glycemic control. The case underscores the importance of recognizing this reversible neurological complication of uncontrolled diabetes