A person who suffers from dehydration does not produce tears while crying. No matter how hard he or she tries, it only seems like the patient is just making corresponding sounds. The lack of wet in any form, including the ability to demonstrate tears, is the alarming symptom. Another sign is the dry mucous membrane. It may lead to the entire mouth area getting too dry.
A decreased blood pressure is one more thing the patients with dehydration may face. The process looks this way: the blood flow is no longer able to distribute the proper amount of oxygen and necessary nutrients. Many organs remain incorrectly, insufficiently ‘fed.’ When the body loses water, it leads to the lowered blood pressure.