Hyponatremia history and symptoms
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
History and Symptoms
Common symptoms include:
- Abnormal mental status
- Convulsions
- Fatigue
- Headache
- Irritability
- Loss of appetite
- Muscle spasms or cramps
- Muscle weakness
- Nausea
- Restlessness
- Vomiting
Most patients with chronic water intoxication are asymptomatic, but may have symptoms related to the underlying cause.
Severe hyponatremia may cause osmotic shift of water from the plasma into the brain cells. Typical symptoms include nausea, vomiting, headache and malaise. As the hyponatremia worsens, confusion, diminished reflexes, convulsions, stupor or coma may occur. Since nausea is, itself, a stimulus for the release of ADH, which promotes the retention of water, a positive feedback loop may be created and the potential for a vicious circle of hyponatremia and its symptoms exists.