Heat exhaustion needs fast, calm first aid: move the person to a cool place, lie them down with legs slightly raised, cool their body, and give sips of fluids while watching closely for signs of heatstroke or deterioration. If they don’t start improving within about 30 minutes, or show any signs of confusion, collapse, or very hot dry skin, seek emergency care immediately.

What heat exhaustion looks like

Common signs you’re dealing with heat exhaustion rather than just “feeling hot” include:

  • Heavy sweating, pale or clammy skin
  • Feeling weak, tired, or faint
  • Headache, dizziness, or lightheadedness
  • Nausea or vomiting
  • Muscle cramps
  • Fast, weak pulse
  • Feeling very thirsty

Red flags for heatstroke (emergency): very hot body temperature, confusion or altered behavior, seizures, loss of consciousness, or skin that is hot and dry or stops sweating.

Step‑by‑step: how to treat heat exhaustion

Follow these first‑aid steps as soon as you suspect heat exhaustion.

  1. Get out of the heat
    • Move to a cool, shaded, or air‑conditioned place.
    • Indoors with a fan or AC is best; otherwise, shade or a breezy spot.
  2. Position the person safely
    • Have them lie down on their back with legs slightly raised above heart level if possible.
    • Loosen or remove tight, heavy, or unnecessary clothing (jackets, socks, hats).
  3. Cool the body
    • Use any safe cooling method available:
      • Cool (not ice‑cold) shower or bath if accessible.
   * Sponge or spray exposed skin with cool water and fan the person.

   * Apply cool, wet cloths or wrapped cold packs to the neck, armpits, groin, and back.
  1. Rehydrate carefully
    • Offer cool water, oral rehydration solution, or a sports drink with electrolytes if the person is fully awake and not vomiting.
 * Encourage small, frequent sips rather than large gulps to reduce nausea.
 * Avoid alcohol and avoid or limit caffeine, as they can worsen dehydration.
  1. Monitor closely for 30 minutes
    • Stay with them, keep cooling and hydrating.
    • They should start feeling better (less dizzy, less nauseated, more alert) and sweating should normalize within about 30 minutes.
  1. Rest and recover
    • Even after symptoms improve, avoid strenuous activity, sun, and high heat for the rest of the day.
    • Continue drinking fluids and eating light, easy‑to‑digest foods as tolerated.

When to call a doctor or emergency services

Heat exhaustion can turn into heatstroke, which is life‑threatening.

Seek urgent medical help (call emergency services) if:

  • Symptoms don’t improve within 30 minutes of cooling and fluids.
  • The person becomes confused, agitated, or has trouble speaking.
  • They vomit repeatedly or cannot keep fluids down.
  • They faint, have a seizure, or are difficult to wake.
  • Their skin becomes hot and dry or they stop sweating despite high temperature.
  • They have other serious conditions (heart disease, pregnancy, kidney problems, on diuretics or heart meds, very young, very old).

Contact a doctor (same day) even if they improve, if:

  • This is not their first episode of heat exhaustion.
  • They are an athlete, outdoor worker, or have a chronic illness and need advice about returning to activity.

What to avoid during treatment

To keep things safe, avoid these common mistakes.

  • Do not give alcohol.
  • Do not give large amounts of very cold water quickly; this can cause stomach cramps or vomiting.
  • Do not leave the person alone, especially if dizzy or confused.
  • Do not put them in an ice bath at home unless under medical guidance (ice baths are mainly for hospital‑managed heatstroke).
  • Do not assume they’re “fine” as soon as they stop sweating—keep monitoring.

Simple prevention tips (so it doesn’t happen again)

Recent heatwaves and hotter summers mean more people are running into heat exhaustion during everyday activities and workouts.

Key prevention habits:

  • Hydrate regularly: drink water throughout the day; add electrolytes during heavy sweating.
  • Time your activities: exercise or work outdoors in early morning or evening, not midday.
  • Dress for the heat: light‑colored, loose clothing; wide‑brimmed hat; breathable fabrics.
  • Protect from sunburn: broad‑spectrum sunscreen, reapplied every 2 hours when outdoors.
  • Take breaks: rest in shade or cool spaces, especially during heatwaves or humid days.
  • Check on vulnerable people: older adults, kids, outdoor workers, and people with chronic illnesses are at higher risk.

Mini “what to do” table (HTML)

[3][7][1][9] [7][9] [3][7][9] [9][3][4]
Situation What to do Emergency?
Early heat exhaustion (dizzy, sweating, headache, nausea) Move to cool place, lie down with legs raised, remove extra clothing, cool skin with water/fan, give small sips of water or sports drink.No, if improving within 30 minutes, but monitor.
Symptoms not better after 30 minutes Continue cooling, stop exercise, avoid heat again that day.Contact a doctor or urgent care; consider emergency care depending on severity.
Confusion, collapse, seizure, very hot dry skin Call emergency services immediately, start aggressive cooling (cool water, fan, cold packs to neck/armpits/groin) while waiting.Yes – treat as heatstroke.
High‑risk person (elderly, infant, heart/kidney disease, pregnancy) Act quickly with cooling and fluids; seek medical advice even if they seem to improve.Often yes or borderline – when in doubt, get medical help.
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