Hashimoto's Encephalitis: Rare Manifestation of Hypothyroidism.

Hashimoto's encephalitis is a rare, heterogeneous and completely treatable form of neuroendocrine disorder manifesting with seizures, stroke-like episodes, encephalopathy, dementia and variable neuropsychiatric manifestations. It is generally associated with a background of Hashimoto's Thyroiditis, and the patient has high titers of antithyroid antibodies, especially antithyroid peroxidase antibodies. This entity responds dramatically to corticosteroids, hence should be always considered and excluded while treating a patient with encephalopathy in the background of a thyroid disease.