Central Pontine Myelinolysis and Hypokalemic Paralysis as Presenting Manifestations of Sjogren's Syndrome.

Neurological involvement in Sjogren's syndrome can have varied manifestations and can precede the classical sicca symptoms of Sjogren's syndrome. A 32-year-old woman presented with acute quadriparesis and dysarthria. She had severe hypokalemia, and an MRI of the brain showed a lesion in the central pons that was hyperintense on T2 and fluid-attenuated inversion recovery (FLAIR) sequences sparing the periphery, a trident appearance characteristic of central pontine myelinolysis (CPM). On further evaluation, she was found to have distal renal tubular acidosis (dRTA) due to primary Sjogren's syndrome. She was treated with steroids and other supportive measures, and she recovered completely in one month. We describe a mild form of CPM with classical MRI features in a patient with Sjogren's syndrome and hypokalemia due to dRTA.