Acute rhabdomyolysis is a rare complication in patients with status asthmaticus receiving mechanical ventilation. Individual reports implicate several factors, whereby the simultaneous use of high-dose glucocorticoids and non-depolarizing muscle blocking agents appears to be the major patho-physiological mechanism. A 48 year-old female patient with a 3-year history of granulomatous vasculitis Churg-Strauss was admitted to the intensive care unit (ICU) due to severe status asthmaticus, which necessitated endotracheal intubation and mechanical ventilation. Antiobstructive therapy consisted of beta 2-sympathomimetics, theophylline and high-dose intravenous prednisolone (5440 mg in 10 days). Additionally, the patient was treated with non-depolarizing muscle blocking agents (atracurium 2070 mg over 7 days). Six days after admission to the ICU the patient developed severe rhabdomyolysis, with an increased creatine kinase (CK) level and myoglobinuria. The maximum CK value occurred 12 days after ICU admission (3810 U/l), accompanied by a serum myoglobin level of 13,900 ng/ml. 5 days after cessation of muscle relaxant therapy and reduction of intravenous glucocorticoids, the serum CK level decreased, reaching normal values 9 days later.