Our report involves a case of hemichorea caused by the nonketotic hyperosmolar state. We have analyzed the clinical data and relevant features of a patient who presented herself to the Affiliated Hospital of Xuzhou Medical University. The patient had unilateral involuntary movements for 1 month. We discovered that her blood glucose levels were very high. The patient underwent computed tomography (CT), magnetic resonance imaging (MRI), and magnetic resonance angiography (MRA), indicating right basal ganglia lesion. Control of the patient's blood glucose plus supportive treatment resulted in a significant improvement of her clinical state.
Keywords: Basal ganglia; chorea; hemichorea; magnetic resonance imaging; nonketotic hyperglycemia.