What are sings of dehydration?

Answer 1

source: http://www.mayoclinic.com/health/dehydration/DS00561/DSECTION=symptoms

Signs of mild dehydration include

• Dry mouth
• Sleepiness
• Thirst
• Decreased urine output - no wet diapers for three hours for infants and eight hours or more without urination for older children and teens
• Few or no tears when crying
• Dry skin
• Headache
• Constipation
• Dizziness or lightheadedness

severe dehydration

• Extreme thirst
• Extreme fussiness or sleepiness in infants and children; irritability and confusion in adults
• Very dry mouth, skin and mucous membranes
• Lack of sweating
• Little or no urination - any urine that is produced will be dark yellow or amber
• Sunken eyes
• Shriveled and dry skin that lacks elasticity and doesn't "bounce back" when pinched into a fold
• In infants, sunken fontanels - the soft spots on the top of a baby's head
• Low blood pressure
• Rapid heartbeat
• Rapid breathing
• No tears when crying
• Fever
• In the most serious cases, delirium or unconsciousness