As the body heats up, the fluids in the body also do, as a cooling down mechanism. This can dehydrate a person very quickly and can cause effects such as dizziness, nausea, headaches and kidney pains. If not treated quickly, severe dehydration can result in seizures.
We can usually tell that we are dehydrated through a dry mouth and lack of urinating. Other symptoms are lethargy, lack of tears, a decrease in blood pressure, sunken eyes and bad skin. It is important to keep hydrated to allow the body to function properly.
Illnesses and viruses may cause dehydration, such as colds and stomach bugs. This can cause dehydration which will only make the illness persist. If the body becomes desperately dehydrated, you may need to seek medical treatment for more drastic measures, such as a drip in the arm. This gives the body high doses of hydration without increasing the illness.
There may be underlying issues that are causing dehydration. It is a symptom of many more serious problems, in particular diabetes. A symptom of diabetes is severe dehydration and urinating as a result.
You should seek medical advice if you are continuously dehydrated.