Signs and Symptoms of Dehydration
Early or Mild to Moderate Dehydration
Headache
Irritability
Dizziness or lightheadedness
Excessive thirst
Nausea / loss of appetite
Dry mouth, cracked lips
Mild disorientation and confusion
Fatigue / lethargy
Decreased urine output / dark-colored urine
Muscle weakness
Flushed, dry skin
Late or Severe Dehydration
Extreme thirst
Very dry mouth, skin, and mucous membranes
Severe confusion and disorientation
Severe muscle cramping in the arms, legs, back, and stomach
Lack of sweating
Convulsions
Fainting
Bloated stomach
Heart failure
Sunken dry eyes with dark rings and few or no tears
Dry, wrinkled skin with a lack of elasticity
Rapid and deep breathing
Low blood pressure
Rapid, weak heartbeat