Background: Chorea is a common presenting feature of metabolic disorders, including nonketotic hyperglycemia in patients with type 2 diabetes mellitus, but rarely has been reported in diabetic ketoacidosis, hypothyroidism and vitamin B12 deficiency.
Methods: Review the literature for reported cases of chorea as a presenting manifestation in metabolic disorders.
Results: We report a case of hemichorea in a patient with type 2 diabetes mellitus complicated by diabetic ketoacidosis.