Resolving the Dance: A Case Study on Non-Ketotic Hyperglycemic Hemichorea-Hemiballismus in a Patient with Long-Standing Type 2 Diabetes.

BACKGROUND Non-ketotic hyperglycemic hemichorea-hemiballism (HCHB) is a rare complication of diabetes, which is mainly described in case reports. This condition occurs more commonly in older women and is known to be associated with T1 hyperintensity basal ganglia lesions on magnetic resonance imaging (MRI). The pathophysiology of non-ketotic hyperglycemic HCHB is not well defined, although a combination of regional metabolic failure and ischemia due to hyperglycemia is suspected to occur.