Final answer:
Malignant Hyperthermia is caused by medications used during anesthesia and treated with dantrolene and supportive care.
Step-by-step explanation:
Malignant Hyperthermia is a severe reaction typically to certain medications used during anesthesia, like volatile anesthetic agents or the muscle relaxant succinylcholine. The condition is characterized by a rapid increase in body temperature (hyperthermia), muscle rigidity, acidosis, and a high heart rate. To treat Malignant Hyperthermia, the causative agents must be discontinued immediately, and the patient should be administered dantrolene, which is a muscle relaxant that mitigates the symptoms by reducing muscle metabolism and heat production. Additionally, supportive treatments such as cooling the patient, administering oxygen, and managing any electrolyte abnormalities are necessary.