Malignant hyperthermia Exercise-triggered malignant hyperthermia 2023-05-07T17:32:38Z Malignant hyperthermia that is characterized by exercise-induced life-threatening hyperthermia with a body temperature over 40 degrees C and signs of encephalopathy ranging from confusion to convulsions or coma. Incidence increases with rising ambient temperature and relative humidity. Manifestations may include rhabdomyolysis (presenting with myalgia, muscle weakness, and myoglobinuria), tachycardia, and in severe cases multiorgan failure. Exertional heat stroke Malignant hyperthermia due to exercise