Science and Education Publishing American Journal of Medical Case Reports 2374-216X 4 7 2016 8 6 Hyperglycemia Induced Reversible Hemiballismus as the Main Presentation of Newly Diagnosed Diabetes Mellitus 245 247 EN Waseem Zaid Alkilani Hassan Tahir Department of Internal Medicine, Temple University/Conemaugh Memorial Hospital, Johnstown, PA 15905, USA Nathan Gibb Saad Ullah Nagadarshini Ramagiri Vinod AJMCR2016478 10.12691/ajmcr-4-7-8 2016 3 15 2016 6 21 2016 8 4 Diabetes Mellitus commonly presents as polyuria, polydipsia, fatigue and polyphagia, though patients presenting with acute complications at the time of diagnosis are not uncommon. Stroke and neuropathies are the most common neurological complications of diabetes. Movement disorder like chorea and hemiballismus are very rarely associated with diabetes mellitus. Primary care physicians should be aware of these rare and complicit presentation of diabetes. We present a case of nonketotic hyperglycemic hemiballismus (NHH) with no acute abnormality seen on MRI brain.