Racing Heart
On the other hand, chronic dehydration can also cause high blood pressure, or hypertension. When blood cells aren’t properly hydrated, they signal to the pituitary gland to make vasopressin, which causes blood vessels to constrict. This, in turn, causes blood pressure to increase.
Fever
Fever and chills are one of the more unexpected symptoms of constant dehydration. If these symptoms persist, or if you’ve also suffered a sunburn, see your doctor.
Dry Skin
Dry skin, frequent breakouts and skin irritation may be caused by the need to drink more water. If you’re dehydrated, your skin is one of the first organs to suffer. Though it will still produce oils, those oils, without fluid-rich and supple skin, will clog up and cause breakouts. Better to just drink your eight glasses a day!
Lethargy, Confusion or Coma
Constant dehydration might also lead you to feel confused, inexplicably tired, delusional and lethargic. In more severe states, it can also lead to coma.
Seizure
In very extreme cases, constant dehydration may cause a seizure. Lack of, or not enough fluids, can cause electrolyte disturbances in the brain, which might lead to seizures.