What Are the Signs and Symptoms of Dehydration?
The body's initial responses to dehydration are thirst to increase water intake along with decreased urine output to try to conserve water. The urine will become concentrated and more yellow in color. As the level of water loss increases, more symptoms can become apparent, such as increased thirst, dry mouth, cessation of tear production by the eyes, cessation of sweating , muscle cramps, nausea and vomiting, heart palpitations, and lightheadedness (especially when standing). With severe dehydration, confusion and weakness will occur as the brain and other body organs receive less blood. Finally, coma and organ failure will occur if the dehydration remains untreated.