Movement disorders (MD) comprise disarrays characterized by involuntary movements and/or loss of control or efficiency in voluntary movement. Fahn and Frucht (2002) defined movement disorder emergency (MDE) as “any neurological disorder evolving acutely or subacutely, in which the clinical presentation is dominated by a primary movement disorder, and in which failure to accurately diagnose and manage the patient may result in significant morbidity or even mortality.” Based on this definition, MD emergencies are classified into six main divisions, which are Parkinson’s disease (PD), acute drug reaction syndromes, acute exacerbation of chronic movement disorders, stiff-person syndrome, lethal catatonia, and acute chorea and hemiballism-hemichorea. Stiff-person syndrome is a rare neruolgical disorder characterized by severe pain and spasms. Hemiballism is an uncommonly occurring hyperkinetic disorder, described by irregular, wide amplitude, vigorous involuntary movements of the limbs, principally due to involuntary movement of the proximal limb and neighboring axial muscles.