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.
Other dehydration symptoms and signs
- 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
Main Article on Dehydration Symptoms and Signs
Pictures, Images, Illustrations & Quizzes
Dehydration: Causes, Symptoms & Signs
Do you know the signs of dehydration? Dehydration can be mild or life-threatening. Learn 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? Where is kidney stone pain located on your body? Learn the symptoms and signs of kidney stone pain....
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 Spasms
What are the differences between muscle spasms and cramps? Learn about the causes of muscle spasms and cramps (charley horse) in...
Travel Health Slideshow: 25 Ways to Stay Well Abroad
Explore travel health tips and vaccines to prevent disease while abroad. Learn to protect yourself against malaria, hepatitis,...