| Resumo: | Abstract Viral infections are a well-known cause of myositis. The clinical presentation may vary from mild myalgia to severe muscle injury. Coronavirus disease 2019 (COVID-19), a viral respiratory disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), can be a cause of myositis and of rhabdomyolysis, a rare and severe complication. A previously healthy 11-year-old female adolescent with COVID-19 presented to the Emergency Department with lower limb pain and inability to walk. The initial laboratory study revealed a marked elevation of muscular enzymes, particularly creatine kinase (13046 UI/L; reference value 149 UI/L). Urine dipstick test reacted positively for hemoglobinuria. The patient started treatment with aggressive intravenous hydration, with progressive clinical and analytical improvement. Musculoskeletal symptoms associated with COVID-19 are a frequent complaint, with potentially severe complications, such as rhabdomyolysis. A proper and timely diagnosis can prevent further clinical deterioration and enable adequate treatment and follow-up. |
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