water deficiency

What Are Side Effects Of Not Drinking Enough Water? Persistent headaches. One of the first things you might notice when you’re dehydrated is a throbbing headache. … Sluggish bowel function. … Dull skin. … Fatigue. … Weight gain. … Dry mouth. What are the symptoms of water deficiency? Vomiting, diarrhea, excessive sweating, burns, kidney failure,