Myelin oligodendrocyte glycoprotein (MOG) antibody disease is a rare autoimmune disorder with antibodies against the MOG predominantly involving the optic nerve and spinal cord leading to vision loss and paralysis. When MOG antibody disease involves the brain, the phenotype is similar to acute disseminated encephalomyelitis (ADEM). In this review, we discuss MOG-positive cases presenting with encephalitis, encephalopathy, or ADEM-like presentation based on recently published series.
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