Intrapongpan, J., Vattanasiriporn, N., Ruenhunsa, T., Nonphiaraj, S., Chanthawong, S. and Charoensuk, C. 2026. Severe Masseter Muscle Rigidity Following Succinylcholine Administration in a Patient with Inconclusive Pharmacogenetic Results for Susceptibility to Malignant Hyperthermia. Journal of Medicine and Health Sciences. 33, 1 (Apr. 2026), 66–69.