Heat exhaustion is a heat-related illness that can occur after you’ve been exposed to high temperatures, and it often is accompanied by dehydration.There are two types of heat exhaustion:

  • Water depletion. Signs include excessive thirst, weakness, headache, and loss of consciousness.
  • Salt depletion. Signs include nausea and vomiting, muscle cramps, and dizziness.

Although heat exhaustion isn’t as serious as heat stroke, it isn’t something to be taken lightly. Without proper intervention, heat exhaustion can progress to heat stroke, which can damage the brain and other vital organs, and even cause death.

Symptoms of Heat Exhaustion

The most common signs and symptoms of heat exhaustion include:

  • Confusion
  • Dark-colored urine (a sign of dehydration)
  • Dizziness
  • Fainting
  • Fatigue
  • Headache
  • Muscle or abdominal cramps
  • Nausea, vomiting, or diarrhea
  • Pale skin
  • Profuse sweating
  • Rapid heartbeat\