Rasmussen's encephalitis

Rasmussen syndrome, also known as Rasmussen's encephalitis, is a rare progressive autoimmune neurological disease. It is characterized by frequent and severe focal seizures, progressive neurological decline, hemiparesis, encephalitis, and unilateral cerebral atrophy. The disease primarily affects children under the age of 15, though adult cases have been reported. Originally described as a form of chronic focal motor epilepsy by Dr. A. Ya. Kozhevnikov in the 1880s and separately identified as focal seizures due to chronic localized encephalitis in the 1950s by Dr. Theodore Rasmussen. It is now classified to be a cytotoxic T-cell–mediated encephalitis.

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