Medical Author: Melissa Conrad Stöppler, MD
Symptoms and signs of dehydration can be minor, such as increased thirst, or severe and life-threatening, depending on the extent of the dehydration. Along with thirst, initial symptoms of dehydration include reduced urine output and darkening of the urine as it becomes more concentrated. If the condition progresses, other symptoms develop, including dry mouth, decreased perspiration, lightheadedness, muscle cramps, weakness, palpitations, and absent tear production by the eyes. The skin may feel cool and clammy. Confusion, organ failure, shock, and coma leading to death eventually occur if dehydration is not corrected.
Causes of dehydration
Any condition that causes reduced intake of fluid into the body or increased loss of fluid can cause dehydration. Common causes include vomiting, diarrhea, excessive sweating, diabetes, burns, and the inability, for any reason, to drink or take in fluids.
Huang, Lennox H. "Dehydration." Medscape.com. Nov. 27, 2016. <http://emedicine.medscape.com/article/906999-overview>.
Main Article on Dehydration Symptoms and Signs
Pictures, Images, Illustrations & Quizzes
25 Ways to Stay Well Abroad in Pictures
Explore travel health tips and vaccines to prevent disease while abroad. Learn to protect yourself against malaria, hepatitis,...
Dehydration: Causes, Symptoms & Tips to Stay Hydrated
Do you know the signs of dehydration? Dehydration can cause medical complications. Learn the causes, symptoms, treatments, and...
Hangover Myths Slideshow: Hangover Cures, Herbal Remedies, Hair of the Dog, and More
Learn ways to avoid a hangover, create morning-after remedies, and other widely held hangover beliefs....
Kidney Stones: Symptoms, Causes, and Treatment
What causes kidney stones? Learn to recognize the symptoms and signs of kidney stone pain. Explore kidney stone treatment and how...
Low Blood Pressure (Hypotension): Symptoms, Signs, Causes
What is low blood pressure (hypotension)? Explore low blood pressure causes, symptoms, and signs. Discover what is considered low...
Muscle Cramps (Charley Horse) and Muscle Spasm Remedies
What causes muscle spasms and cramps (charley horse)? What is the differences between muscle spasms and cramps? Learn about...
Dehydration Symptoms and Signs
Decreased Skin Turgor
Increased Respiratory Rate
Low Blood Pressure
Low or No Urine Output
No Tears in the Eyes
Rapid Heart Rate
- Clammy Skin
- Cool Skin
- Dark Urine
- Decreased Skin Turgor
- Decreased Sweating
- Dry Mouth
- Increased Respiratory Rate
- Increased Thirst
- Low Blood Pressure
- Low or No Urine Output
- Muscle Cramps
- No Tears in the Eyes
- Rapid Heart Rate
- Weak Pulse