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Symptoms
By Mayo Clinic staffHyponatremia signs and symptoms may include:
- Nausea and vomiting
- Headache
- Confusion
- Lethargy
- Fatigue
- Appetite loss
- Restlessness and irritability
- Muscle weakness, spasms or cramps
- Seizures
- Decreased consciousness or coma
When to see a doctor
If you take part in high-intensity activities, such as marathons, have a medical condition that increases your risk of hyponatremia, or have other risk factors for hyponatremia and you exhibit the signs and symptoms of low blood sodium, see your doctor.
- Rose BD. Diagnosis of hyponatremia. http://www.uptodate.com/home/index.html. Accessed May 26, 2009.
- Gibbs MA, et al. Electrolyte disturbances. In: Marx JA, et al., eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 6th ed. St. Louis, Mo.: Mosby; 2006. http://www.mdconsult.com/das/book/body/139569939-5/845288330/1365/382.html#4-u1.0-B0-323-02845-4..50128-1_6348. Accessed May 26, 2009.
- Rose BD. Causes of hyponatremia. http://www.uptodate.com/home/index.html. Accessed May 26, 2009.
- Rose BD. Treatment of hyponatremia. http://www.uptodate.com/home/index.html. Accessed May 26, 2009.
- Weinberg MS, et al. Disorders of sodium homeostasis. In: Ferri FF. Practical Guide to the Care of the Medical Patient. 7th ed. St. Louis, Mo.: Mosby; 2007. http://www.mdconsult.com/das/book/body/139569939-3/0/1417/921.html?tocnode=52510185&fromURL=921.html. Accessed May 26, 2009.
- Drezner JA, et al. Environmental influences. In: Rakel RE. Textbook of Family Medicine. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/das/book/body/139569939-6/845288600/1481/481.html#4-u1.0-B978-1-4160-2467-5..50043-9--cesec21_2481. Accessed May 26, 2009.
- Ferrante MA, et al. Endogenous metabolic disorders. In: Goetz GD. Textbook of Clinical Neurology. 3rd ed. Philadelphia, Pa.: W.B. Saunders; 2007. http://www.mdconsult.com/das/book/body/139569939-7/845289096/1488/324.html#4-u1.0-B978-1-4160-3618-0..10038-4_2905. Accessed May 26, 2009.
- Campbell GA. The agony of ecstasy: MDMA (3,4-methylenedioxymethamphetamine) and the kidney. Clinical Journal of the American Society of Nephrology. 2008;3:1852.
