Steroid responsive encephalopathy associated with autoimmune thyroiditis presenting with late onset depression.

ABSTRACT

Steroid responsive encephalopathy associated withSteroid responsive encephalopathy associated with autoimmune thyroiditis (SREAT), (also known as Hashimoto's encephalopathy) is a rare autoimmune encephalitis associated with high antithyroid antibodies, and presents with a relapsing-remitting or monophasic course, consisting of confusion, seizures, psychosis, dementia, or stroke-like episodes. In this report, a late onset depression was the initial presentation of SREAT in a middle aged patient, something rarely described before, indicating the need to suspect SREAT as a possible etiology for depression in this age group.