Hypothyroidism as a cause of rhabdomyolysis

We describe a patient presenting with muscular symptoms and rhabdomyolysis without any other precipitating factor, except primary hypothyroidism. After thyroxine replacement, musculoskeletal symptoms disappeared and creatine kinase concentrations decreased. Hypothyroidism is a rare cause of rhabdomyolysis, but should always be considered in a patient with an unexplained increase in creatine kinase concentrations.