Table 1.

Signs and symptoms of exertional rhabdomyolysis, heat injury, and heat stroke

Sign or symptomExertional rhabdomyolysisExertional heat injuryExertional heat stroke
Fatigue/weakness • • • 
Dizziness/lightheadedness  • • 
Vision changes  • • 
Headache  • • 
Nausea/vomiting  • • 
Confusion/altered mental status   • 
Muscle weakness •   
High core body temperature  • • 
Tachycardia   • 
Hypotension   • 
Dark urine or decreased urine output • • • 
Seizures   • 
Hyperkalemia •   
Disseminated intravascular coagulation •   
Collapse or cardiac arrest •   
Sign or symptomExertional rhabdomyolysisExertional heat injuryExertional heat stroke
Fatigue/weakness • • • 
Dizziness/lightheadedness  • • 
Vision changes  • • 
Headache  • • 
Nausea/vomiting  • • 
Confusion/altered mental status   • 
Muscle weakness •   
High core body temperature  • • 
Tachycardia   • 
Hypotension   • 
Dark urine or decreased urine output • • • 
Seizures   • 
Hyperkalemia •   
Disseminated intravascular coagulation •   
Collapse or cardiac arrest •   
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