Repeated use of 3,4-methylenedioxymethamphetamine can be addictive, and can induce potential mental illness and physical damage. Clinical studies have confirmed that MDMA, the main component of ecstasy, can cause brain and psychological diseases such as memory loss and paranoia, and also induce life-threatening malignant diseases such as rhabdomyolysis, diffuse cardiovascular coagulation, liver gangrene, cerebrovascular accident, and renal failure caused by malignant hyperthermia.