What is a key complication of Ecstasy (MDMA) intoxication?

What is a key complication of Ecstasy (MDMA) intoxication?

• A. Hepatotoxicity: jaundice, abdominal pain, N/V with elevated bilirubin and AST/ALT
• B. Hypertension and tachycardia
• C. Hyponatremia due to increased fluid intake leading to neuro symptoms
• D. Hyperkalemia

Answer: (C)

MDMA often leads to hyponatremia because users frequently drink large amounts of water to stay hydrated, and the drug can promote an antidiuretic hormone–like effect with water retention. The resulting dilutional hyponatremia lowers serum osmolality, causing brain swelling and neurologic symptoms such as confusion, seizures, and in severe cases coma. This neuro complication is particularly important and life-threatening, making it the key issue to recognize in Ecstasy intoxication. While sympathetic stimulation from MDMA can cause tachycardia and hypertension, and hepatotoxicity or electrolyte disturbances like hyperkalemia can occur in other contexts, hyponatremia with neurologic symptoms is the most notable and clinically significant complication to identify and manage in this setting.

MDMA often leads to hyponatremia because users frequently drink large amounts of water to stay hydrated, and the drug can promote an antidiuretic hormone–like effect with water retention. The resulting dilutional hyponatremia lowers serum osmolality, causing brain swelling and neurologic symptoms such as confusion, seizures, and in severe cases coma. This neuro complication is particularly important and life-threatening, making it the key issue to recognize in Ecstasy intoxication.

While sympathetic stimulation from MDMA can cause tachycardia and hypertension, and hepatotoxicity or electrolyte disturbances like hyperkalemia can occur in other contexts, hyponatremia with neurologic symptoms is the most notable and clinically significant complication to identify and manage in this setting.