What are symptoms and first aid for heatstroke?

What to do if heat exhaustion or heatstroke is suspected

Heat illness can escalate quickly during hot weather. The practical guidance in the coverage focuses on recognizing two related conditions—heat exhaustion and heatstroke—and acting fast.

Heat exhaustion vs. heatstroke (what to watch)

• Heat exhaustion can occur when the body overheats and struggles to cool itself. Symptoms can include heavy sweating, weakness, dizziness, headache, nausea, and feeling faint.
• Heatstroke is more dangerous and may involve confusion, seizures, or a very hot body. It can be life-threatening.

Immediate actions

If someone may have heat exhaustion or heatstroke: 1. Get to a cooler place (shade, air-conditioned area, or use ventilation). 2. Cool the person actively: loosen clothing and use cool water/evaporative cooling methods (for example, spraying and fanning). 3. Give fluids if they are alert and able to swallow. Do not force fluids if the person is confused or not fully awake. 4. Call emergency services for heatstroke or serious symptoms—especially confusion, collapse, or any signs of organ stress.

Why speed matters

The body’s cooling mechanisms can fail under prolonged heat exposure. The guidance emphasizes that even if symptoms start mild, they can worsen—so cooling and prompt escalation of care are key.

If you tell me the person’s age, symptoms, and whether they’re sweating or confused, I can help you decide which action step is most urgent (emergency call vs. cooling and monitoring).