What is hyponatremia?
A person with hyponatremia has abnormally low levels of sodium in the bloodstream.

What are the symptoms of hyponatremia?
Symptoms of mild hyponatremia include weakness, fatigue, nausea, and headache. Symptoms of severe hyponatremia include confusion and seizures.

How does the doctor treat hyponatremia?
Treatment for hyponatremia may include oral liquids that contain sodium, intravenous fluids, water restriction, and medications.