Sleep-related hypermotor epilepsy in a patient with myelin-oligodendrocyte-glycoprotein antibody disease

Unusual seizure phenotypes in myelin-oligodendrocyte-glycoprotein (MOG) seropositive patients have previously been reported, although so far, no cases of sleep-related hypermotor epilepsy (SHE). In our case, a patient with a diagnosis of MOG antibody-associated disease (MOGAD) began reporting unusual sleep disturbances; video-audio documentation was in keeping with the clinical diagnosis of SHE. MRI brain was normal at the time of the assessment for seizures. Symptoms responded to antiepileptic drugs (AEDs). These unusual seizure events were thought to be indicative of the underlying autoimmune condition, suggesting that the clinical spectrum of MOGAD is wider than previously thought.