Acute renal failure due to McArdle's disease.

A 37-year-old previously fit man developed acute renal failure associated with rhabdomyolysis following a brief period of strenuous exercise. Subsequent muscle biopsy and ischaemic arm exercise confirmed the diagnosis of McArdle's disease. This case illustrates that McArdle's disease can present with acute renal failure in the absence of a past history of exercise-induced muscle pain and stiffness.