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What to do if…
you develop severe muscle cramps and feel overheated in hot weather

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy USA guide

Short answer

Stop the activity, move to a cooler place, and start cooling down now. Severe cramps while overheated may be a sign of heat-related illness. Call 911 immediately for confusion, slurred speech, fainting, collapse, seizure, or unconsciousness.

Do not do these things

  • Do not keep exercising, working, or trying to finish the task in the heat.
  • Do not take salt tablets.
  • Do not drink alcohol.
  • Do not force drinks if nausea or vomiting starts.
  • Do not give drinks to someone who is confused, markedly drowsy, having a seizure, or unconscious.
  • Do not leave a very overheated person alone.

What to do now

  1. Move out of the heat. Go into air conditioning if possible. Otherwise, move into shade and sit or lie down.
  2. Start active cooling.
    • Remove or loosen outer layers of clothing.
    • Wet the skin with cool water or apply cool wet cloths.
    • Use a fan only if the air movement feels cooling. Stop if it makes the person feel hotter.
    • Apply cold packs or cold wet towels to the head, neck, trunk, armpits, and groin if available.
  3. Drink frequent sips if you can drink safely. Sip cool water. If you have been sweating heavily, you may also have a snack or a carbohydrate-electrolyte drink, such as a sports drink, every 15–20 minutes.
  4. Ease the cramp gently. Rest the affected muscle. Use gentle stretching or gentle massage.
  5. Call 911 immediately for emergency warning signs. Call for confusion, slurred speech, unusual behaviour, fainting, collapse, seizure, unconsciousness, or a rapidly worsening condition. Keep cooling the person while help is on the way.
  6. Get urgent medical help if symptoms are not settling. Seek prompt medical evaluation if symptoms are not continuing to improve after cooling starts, vomiting starts, symptoms worsen, you cannot drink, or the cramps last longer than one hour. Get medical advice promptly if you have heart problems or follow a low-sodium diet.
  7. Get prompt medical assessment for possible muscle breakdown warning signs. Seek care if you develop dark tea-coloured or cola-coloured urine, reduced urine output, unusual weakness, or severe muscle pain.
  8. Do not return to strenuous activity for a few hours after the cramps stop.

What can wait

  • You do not need to decide whether this is dehydration, heat cramps, heat exhaustion, or another problem before you start cooling down.
  • You do not need to continue work, exercise, driving, or social plans right now.
  • Messages, explanations, and schedule changes can wait until you are cooler and the symptoms are settling.

Important reassurance

Stopping activity and cooling down are useful first steps. You do not need to work out the exact cause before acting. Ask someone to stay with you or check on you if possible. If you are helping someone else, stay with them and watch for worsening symptoms.

Scope note

These are first steps for the immediate situation. Persistent, worsening, or recurring symptoms may need medical assessment and later decisions may need help from a healthcare professional.

Important note

This guide provides general information only. It is not medical, legal, financial, therapeutic, or other professional advice. Call 911 for emergency warning signs or if you are unsure whether the situation is an emergency.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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