Paroxysmal Amnesia Attacks due to Hashimoto’s Encephalopathy

Abstract EN

Hashimoto’s encephalopathy is a rare disease which is thought to be autoimmune and steroid responsive.

The syndrome is characterized by cognitive impairment, encephalopathy, psychiatric symptoms, and seizures associated with increased level of anti-thyroid antibodies.

The exact pathophysiology underlying cerebral involvement is still lesser known.

Although symptoms suggest a nonlesional encephalopathy in most of the cases, sometimes the clinical appearance can be subtle and may not respond to immunosuppressants or immunomodulatory agents.

Here we report a case who presented with drowsiness and amnestic complaints associated with paroxysmal electroencephalography (EEG) abnormalities which could be treated only with an antiepileptic drug.