Some of the symptoms that hyponatremia (low sodium in the blood) can cause:
- Anorexia
- Nausea and vomiting
- Difficulty concentrating
- Confusion
- Lethargy
- Agitation
- Headache
- Seizures
Even more dangerous, low serum sodium (hyponatremia) can lead to elevated blood levels of potasium (hyperkalemia) which can cause slow/weak heart rate or even cardiac standstill, fatal without immediate intervention.