In chemistry, dehydration reaction is defined as the chemical reaction in which the reacting molecules lose some water molecules. In medical terms, it is loss of fluid from the body causing weight loss.
Dehydration reaction is caused in the human body due to many reasons like some diseases or weakened water stability in the body. Water loss in the body is sometimes due to carrying on excessive physical activity without taking adequate water especially in hot weather conditions. Due to physical activity, lot of sweat in the form of water is lost. Sometime in the weather or flying aeroplanes there will be lot of humidity, which also causes dehydration reaction in the body. Fasting, refusing to take food, restricted salt diet, loosing weight, inability to ingest and many more are also cause of dehydration created by people themselves.
Some infectious diseases like cholera, gastroenteritis, yellow fever, malnutrition, etc vanishes body fluid causing dehydration in the body. Dehydration occurs even when there is a problem of vomiting, burn, shock, blood loss, use of certain stimulants, etc. In person high in alcohol intake, the chance of dehydration is high.
Body’s reaction to the dehydration is noted when the body has lost atleast 2% of the body fluid. Initially, one feels thirst, uncomfortable, dry skin and sometime loss of appetite. Constipation, decreased urine volume, dark urine, headache, dry mouth, irritability, tiredness and lack tears when crying follow this. Dehydration in athletes is a very serious case they lose their performance capacity, experience flushing, redness of skin, rapid heart rates, fatigue and elevated body temperature. In early stage, the problem of dehydration has to be treated to avoid serious threats.
Some of the symptoms during this dehydration reaction include headache as in the case of hangovers, decreased blood pressure or hypotension, sudden dimness in the vision, muscle cramps and dizziness due to low blood pressure. In moderate to severe cases, the symptoms increase by absolutely no urine output, lethargy i.e. intense sleepiness, deep-set fontanel in the infants, fainting and deep-set eyes. If this is not treated timely, it causes swelling of throat, unconsciousness and in acute cases death.
The best treatment for dehydration reactions is to avoid dehydrating your body and drink sufficient amount of water or liquids. The regular use of any liquids or water is a must to hydrate the body. The amount of intake should be greater than what one is losing. Avoid sweating when dehydration has already acquired your body. When you feel thirsty, it means that the body has lost about 1% of fluid. When it reaches 2%, it is said that the body is dehydrated. So, as soon as you feel thirsty better drink water. During normal conditions, a person loses body fluid through lungs in the form of water vapours, through the skin as sweat and through the kidney as urine. In total, the body loses about 2.5 litres of body fluid and in places of high temperature; the loss is still higher. Drinks containing glucose will help more than the carbohydrate drinks. The effect of dehydration reaction in the body is high if care is not taken.