A case report: Non-alcoholic Wernicke encephalopathy associated with polyneuropathy.

We report a rare case of non-alcoholic Wernicke encephalopathy (WE) with polyneuropathy. A 24-year-old woman who had recently served a 4-month prison sentence and underwent a short period of dieting manifested slow response, weakness, language disorder and amnesia. Brain magnetic resonance imaging (MRI) revealed typical lesions of WE. Examination of nerve conduction velocity revealed sensory-motor axonal polyneuropathy. The patient was immediately treated with thiamine. Neurological symptoms were alleviated in a few days and abnormal signals were markedly decreased in a follow-up MRI 1 week later. Polyneuropathy symptoms ameliorated during hospital therapy and significantly improved after 4 months. This case suggests that WE may be associated with polyneuropathy in non-alcoholic patients. Early thiamine treatment in symptomatic patients may improve prognosis.