Isolated extra pontine myelinolysis presenting as acute onset parkinsonism.

A 50-year-old woman was brought to the emergency department with complaints of altered mental status, her serum sodium at that time was 103 mmol/l. Slow correction of hyponatraemia was started but despite every effort serum sodium rise was rapid. Although the patient improved initially, after 4 days she presented with features of parkinsonism. MRI brain was done and it was suggestive of features of EPM. She responded well to levodopa plus carbidopa therapy.