Signs of heat-related illnesses include:
- an extremely high body temperature (above 103°F)
- red, hot and dry skin (no sweating)
- rapid, strong pulse
- throbbing headache
- dizziness; nausea; confusion
- muscle cramps
- tiredness and unconsciousness
If someone starts to experience these symptoms, seek medical help immediately and move them to a shady spot, if outdoors, and begin cooling them using whatever methods are available. Monitor body temperature, and continue cooling efforts until the body temperature drops to 101-102°F.