Evolution of the EEG in children with Rasmussen’s syndrome

Abstract

No specific EEG changes at diagnosis of epilepsy were identified to help differentiate between RS and FCD. Emerging persistent delta activity over the affected hemisphere with contralateral normal background rhythms, followed in due course by independent interictal epileptiform abnormalities over the unaffected hemisphere may support the diagnosis of RS as the condition evolves, and highlight the risk of overall cognitive dysfunction.