A 76-year-old man with hypogammaglobulinemia on monthly intravenous immunoglobulin infusions presented to the hospital with fever, cough, and shortness of breath and was diagnosed with COVID-19 pneumonia requiring intensive care unit admission but not intubation. He was treated with convalescent plasma, remdesivir and corticosteroids. Sixteen days into his hospitalisation he began to report weakness without sensory symptoms and was found on biopsy to have a necrotising myopathy.
Keywords: COVID-19; muscle disease; neuromuscular disease.
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