Steroid-Responsive Encephalopathy Associated with Autoimmune Thyroiditis Presenting as Confusion, Dysphasia, and Myoclonus

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Steroid response encephalopathy associated with autoimmune thyroiditis (SREAT), or Hashimoto’s encephalopathy, is a rare disorder believed to be immune-mediated. It is most often characterized by a subacute onset of confusion with altered level of consciousness, seizures, and myoclonus. We describe the case of a 48-year-old gentleman who presented with confusion and dysphasia. Specific clinical features and laboratory results led to a diagnosis of Hashimoto’s encephalopathy. This case highlights the core features of this condition and the potential for complete response to steroid therapy. 1