Acute Disseminated Encephalomyelitis Post COVID-19 Pneumonia.

Acute disseminated encephalomyelitis (ADEM) is a monophasic condition characterized by inflammation of the central nervous system. Besides multiple sclerosis, optic neuropathy, acute transverse myelitis, and neuromyelitis optica spectrum disorder, ADEM is a primary inflammatory demyelinating disorder of the central nervous system. It is estimated that approximately three-quarters of cases of encephalomyelitis occur after an infection or immunization, where the onset of neurological disease is coincident with a febrile event. Here, we report an 80-year-old woman with coronavirus disease pneumonia who developed sudden onset of decreased level of consciousness, focal seizure, and right-side weakness. Magnetic resonance imaging (MRI) of the brain showed a multifocal hemorrhagic lesion with surrounding edema, suggesting ADEM. An electroencephalogram (EEG) revealed moderate generalized encephalopathy. The patient received alternating pulse steroids with plasma exchange for five days. Subsequently, her Glasgow coma scale score continued to decrease, and thus, she required inotropic support until she expired.