Symptoms of Severe Dehydraton - Mouth dries out, becomes caked and coated. - The lips become parched and cracked. - The tongue swells and cracks. - The eyes recede back into their orbits. - The cheeks become hollow. - The lining of the nose cracks. - The nose bleeds. - Skin hangs loose on the body, becomes dry, scaly. - Urine becomes highly concentrated, leads to bladder burning. - Stomach lining dries out, dry heaves and vomiting. - Body temperature becomes very high. - Brain cells dry out, causing convulsions. - Respiratory tract dries out, thick secretions plug the lungs...