Schwartz-Jampel syndrome is not related to malignant hyperthermia.

Schwartz-Jampel syndrome (SJS) is a rare syndrome that is clinically characterized by myotonia and skeletal abnormalities. Most reports regarding SJS have stated that patients with SJS are susceptible to malignant hyperthermia (MH). The statement is incorrect. There is no report showing that SJS is related to MH. Scientific evidence also shows that patients with myotonias are not susceptible to MH except for that with hypokalemic periodic paralysis. Medical practitioners must recognize that SJS is not related to MH.