Jet-Ski Rhabdomyolysis

To the Editor.— Acute exertional rhabdomyolysis is a syndrome occurring in apparently normal, healthy individuals as a result of performing strenuous exercise. It has been observed in marathon runners1-3and military recruits4-6and the activities of mechanical bull riding,7conga drumming,8karate kicking,9and wrestling.10We now describe a case of rhabdomyolysis occurring after jetskiing—a growing water sport in which the operator rides a motorcycle-like vehicle on the water's surface. Report of a Case.— A previously healthy 31-year-old man was initially seen with the complaint of right arm pain and swelling. Four and five days earlier, he rode a jet ski for three hours daily. He experienced only ordinary muscle aches until two days later, when he noted swelling of his right arm from the wrist to shoulder accompanied by paresthesias of the right hand. The patient denied recent trauma or participation in strenuous