Warning Signs and Symptoms of Heat-Related Illness

Heat-related illnesses are preventable. Learn the symptoms and what to do if you or a loved one shows signs of having a heat-related illness.

Text Equivalent

Heat Related Illness

Heat-Related Illnesses
Heat Stroke
WHAT TO LOOK FOR
  • High body temperature (103°F or higher)
  • Hot, red, dry, or damp skin
  • Fast, strong pulse
  • Headache
  • Dizziness
  • Nausea
  • Confusion
  • Losing consciousness (passing out)
WHAT TO DO
  • Call 911 right away-heat stroke is a medical emergency
  • Move the person to a cooler place
  • Help lower the person’s temperature with cool cloths or a cool bath
  • Do not give the person anything to drink
Heat Exhaustion
WHAT TO LOOK FOR
  • Heavy sweating
  • Cold, pale, and clammy skin
  • Fast, weak pulse
  • Nausea or vomiting
  • Muscle cramps
  • Tiredness or weakness
  • Dizziness
  • Headache
  • Fainting (passing out)
WHAT TO DO
  • Move to a cool place
  • Loosen your clothes
  • Put cool, wet cloths on your body or take a cool bath
  • Sip water

Get medical help right away if:

  • You are throwing up
  • Your symptoms get worse
  • Your symptoms last longer than 1 hour
Heat Cramps
WHAT TO LOOK FOR
  • Heavy sweating during intense exercise
  • Muscle pain or spasms
WHAT TO DO
  • Stop physical activity and move to a cool place
  • Drink water or a sports drink
  • Wait for cramps to go away before you do any more physical activity

Get medical help right away if:

  • Cramps last longer than 1 hour
  • You’re on a low-sodium diet
  • You have heart problems
Sunburn
WHAT TO LOOK FOR
  • Painful, red, and warm skin
  • Blisters on the skin
WHAT TO DO
  • Stay out of the sun until your sunburn heals
  • Put cool cloths on sunburned areas or take a cool bath
  • Put moisturizing lotion on sunburned areas
  • Do not break blisters
Heat Rash
WHAT TO LOOK FOR
  • Red clusters of small blisters that look like pimples on the skin (usually on the neck, chest, groin, or in elbow creases)
WHAT TO DO
  • Stay in a cool, dry place
  • Keep the rash dry
  • Use powder (like baby powder) to soothe the rash

View Page In:Cdc-pdf PDF [113K]
Extreme heat infographic badge. Ready.gov logo CDC: Emergency Preparedness and Response Social Media