hormonal and metabolic disorders
Hyponatremia (Low Level of Sodium in the Blood)
Symptoms of Hyponatremia
The brain is particularly sensitive to changes in the sodium level in blood. Therefore, symptoms of brain dysfunction, such as sluggishness (lethargy) and confusion, occur first. If the sodium level in blood falls quickly, symptoms tend to develop rapidly and be more severe. Older adults are more likely to have severe symptoms. As hyponatremia becomes more severe, muscle twitching and seizures may occur. People may become unresponsive, aroused only by vigorous stimulation ( Stupor and Coma ), and eventually cannot be aroused (coma). Death may follow. 