Heterogeneity in malignant hyperthermia is being recognized with increasing frequency. In 1973, King described a subgroup of malignant hyperthermia patients with slowly progressive myopathy, short stature, kyphoscoliosis, pectus carinatum, cryptorchidism, and a characteristic facial appearance.
King's syndrome is a sporadic genetic syndrome exhibiting characteristic facial features, short stature, and subclinical myopathy. Affected individuals are susceptible to malignant hyperthermia (MH) induced by anesthesia, stress, or trauma. The incidence of King's syndrome is uncertain as all