HYPONATREMIA

Hyponatremia is a metabolic condition in which there is not enough sodium in the body fluids outside the cells.

Sodium circulates in the body fluids outside the cells. It is very important for maintaining blood pressure. Sodium is also needed for nerves and muscles to work properly.

When sodium levels drop in the fluids outside the cells, water will seep into the cells to balance the salt levels. The cells will swell as a result of the excess water. Although most cells can handle this swelling, brain cells cannot, because the skull confines them. Brain swelling causes most of the symptoms of hyponatremia.