| Summary: | Background: Several neurological complications are being reported in hospitalized patients with severe COVID-19 infection. This is presumed due to direct spread of infection or due to immunological response. Acute disseminated encephalomyelitis (ADEM) is a rare inflammatory and demyelinating disorder of the central nervous system that is often preceded by infection or vaccination. Very few cases of ADEM have been reported in the literature that are associated with COVID-19 infection. Case Report: Here we demonstrate familial cases of ADEM in a hospitalized father and son, who presented to the emergency department with fever and shortness of breath, later diagnosed with COVID-19, and subsequently requiring mechanical ventilation. Both patients developed neurological symptoms with upper motor neuron involvement at approximately day 30 of admission. MRI of the brain demonstrated bilateral multifocal periventricular white matter FLAIR signal hyperintensities consistent with ADEM. The patients were treated with medium dose IV methylprednisolone with variable outcomes. The 49-year-old son developed severe residual neurological deficits with encephalomalacic changes on MRI which required extensive rehabilitation; meanwhile, the 68-year-old father predominantly had pulmonary sequelae including fibrosis and the development of a pneumatocele, but he had a better neurological outcome. Conclusion: To our knowledge, this is the first reported case report of ADEM involving father and son in severe COVID-19 infection. Final neurological outcomes in these patients appeared to be in line with the severity of COVID-19 infection. More research is needed to better understand the management of ADEM in patients with severe COVID-19 infection.
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