What is dehydration?
A person with dehydration does not have enough water in the body, in order to function properly. Dehydration can be caused by frequent urination, sweating, diarrhea, or vomiting. Symptoms depend on the severity of the dehydration. Dehydration is more common in infants and the elderly.

What are the symptoms of dehydration?
Symptoms of mild dehydration include decreased urination, excessive thirst, and dark urine. Symptoms of moderate dehydration include absence of urination for more than 8 hours, dry mouth, dry skin, dizziness, fainting, nausea, rapid pulse, and weakness. Severe dehydration may cause absence of urination for more than 12 hours, low blood pressure, confusion, and lethargy.

How does the doctor treat dehydration?
Treatment for dehydration may include encouragement of oral fluids, switching to a clear liquid diet, and the use of medications to control vomiting and diarrhea. Some may require intravenous fluids.