Are there obvious symptoms when someone is hyponatremic?

How long to gt there. If one develops hyponatremia slowly over weeks, as may occur with use of a diuretic, ther may be no symptoms. The more rapidly it occurs, as well as what is causing it, may cause dizzy, lightheaded, confusion, psychosis, seizures and death. If one finds it as lab finding with no symptoms, a cause should be sought. It could potentially be a serious malady.