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  • Title: Nonketotic hyperglycemia hemichorea and hemiballismus: a case report.
    Author: Dixit A.
    Journal: J Med Case Rep; 2024 Mar 12; 18(1):154. PubMed ID: 38468351.
    Abstract:
    BACKGROUND: Diabetic striatopathy, also known as hyperglycemic hemichorea-hemiballismus, is a rare movement disorder associated with nonketotic hyperglycemia in patients with poorly controlled diabetes mellitus. The pathophysiology is not fully elucidated but may involve hyperviscosity, ischemia, and alterations in basal ganglia neurotransmitters. CASE PRESENTATION: We present a case of a 64-year-old Asian female patient with longstanding poorly controlled type 2 diabetes mellitus who developed abrupt-onset right-sided hemichorea-hemiballismus. Laboratory results showed hyperglycemia without ketoacidosis. Neuroimaging revealed left putaminal hyperdensity on computed tomography and T1 hyperintensity on magnetic resonance imaging. With insulin therapy and tetrabenazine, her movements improved but persisted at 1-month follow-up. DISCUSSION: This case illustrates the typical features of diabetic striatopathy, including acute choreiform movements contralateral to neuroimaging abnormalities in the setting of nonketotic hyperglycemia. While neuroleptics may provide symptomatic relief, prompt glycemic control is critical given the risk of recurrence despite imaging normalization. CONCLUSION: Diabetic striatopathy should be recognized as a rare disorder that can occur with poorly controlled diabetes. Further study of its pathophysiological mechanisms is needed to better guide management. Maintaining tight glycemic control is essential to prevent recurrence of this debilitating movement disorder.
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