• Alternative Names

    Dilutional hyponatremia; Euvolemic hyponatremia; Hypervolemic hyponatremia; Hypovolemic hyponatremia


    Common symptoms include:

    • Abnormal mental status
      • Confusion
      • Decreased consciousness
      • Hallucinations
      • Possible coma
    • Convulsions
    • Fatigue
    • Headache
    • Irritability
    • Loss of appetite
    • Muscle spasms or cramps
    • Muscle weakness
    • Nausea
    • Restlessness
    • Vomiting

    Signs and tests

    The health care provider will perform a complete physical examination to help determine the cause of your symptoms. Blood and urine tests will be done.

    The following laboratory tests can confirm hyponatremia:

    • Comprehensive metabolic panel (includes blood sodium)
    • Osmolality blood test
    • Urine osmolality
    • Urine sodium