how does a person become dehydrated?

Answer 1

Inadequate intake or excessive loss of water or fluids from the body will make a person dehydrated.

Compare a person's body to a water tank. When less water is placed while more volume is taken out, the water stored in the tank can become insufficient that the water you will get is insufficient when you open its faucet. That analogy works similar to person's body.

As body water decreases, the water and fluids amount in the body cells also decrease - that is when signs of dehydration start to show up to give a signal that your body needs more water fluids. Thirst, headache,mouth skin dryness, and weakness will be felt. Heart beats and respiration can increase, blood pressure can decrease, etc.

Nausea, vomiting, excessive sweating and fever are some of the common causes of the dehydration. Many diseases can also be a cause such as diabetes.

Answer 2

First, dehydration is diagnosed many times more often than it actually occurs, and a layperson's diagnosis of dehydration almost excludes the existence of the state.
It's simply a matter of losing more fluids than are taken in, and since people are normally going to drink when they get thirsty, there has to be something unusual occuring to keep that from happening. Most often, a stomach virus will do it. Vomiting will lose some fluid, but more importantly, people will sometimes try to limit the amount of vomiting by decreasing fluid intake at the very time when they need to be increasing fluid intake to replace the excess fluid lost in the diarrhea. Typically I'll make them sit in the ER and sip, and they'll rehydrate just fine. Little kids with rotavirus or third-world people with cholera will occasionally find it impossible to keep up adequate fluid intake. Of course, it's also possible to lose excess fluid from sweat or even the breathe, but unless the person's being exceptionally hard-headed (extreme sports come to mind) or really ill or taking a diuretic, it's natural to remain pretty well hydrated as long as there's a water source nearby.

Answer 3

He or she outputs more water than he/she intakes.

We output water through urine, bowel movements, and sweating. If we don't replace that water our body will start to become dehydrated.

Answer 4

by not recieving enough fluids to keep body hydrated