Water intoxication

Overview

Drinking too much water (water intoxication) can decrease sodium in the blood to dangerously low levels, causing mild to life-threatening problems. People who participate in endurance activities, such as a marathon or triathlon, are at risk.

Symptoms

Confusion, nausea, and vomiting are symptoms. Severe cases can cause seizures, coma, and death.

Treatments

Treatments are fluid restriction, IV fluids high in sodium, and medications.