07/24/2026
The most common symptoms include heavy sweating, fast and weak pulse, muscle cramps, and extreme thirst. You also have to watch out for headache, dizziness, fainting, nausea and vomiting.
You may avoid a trip to the emergency department if you can immediately:
✅Move the person to a cool or air-conditioned space,
✅Remove unnecessary or heavy clothing,
✅Have them water and replace electrolytes with drinks like Gatorade or Powerade, and
✅Have them lay down and elevate their legs and feet slightly.
If after a period of heavy sweating, the person does not sweat at all and their symptoms do not improve, you could be witnessing signs of a life-threatening heat stroke, says Paddy Griffin, RN, who works in the Candler Hospital Emergency Department.
"Other signs include a core body temperature of 103.0 or higher, confusion, slurred speech, seizures, or even loss of consciousness. If someone has these symptoms, call 911 or get them to a hospital immediately. The ED offers resources that aren't available at home, such as body-cooling procedures, various modes of rehydration depending on your lab work, and specialized monitoring and equipment.
"Don’t hesitate to seek our help with the extreme effects of summer heat."