Hot weather brings a higher risk of your body overheating, especially if you're spending time in the sun or in stuffy, poorly ventilated spaces. One of the most dangerous outcomes of overheating is heatstroke — a serious condition that can threaten your health and even your life. That's why it's so important to know how to recognize it and what to do right away.
By the way, we've also written about sunstroke.
What Is Heatstroke and What Are the Symptoms?
Heatstroke is a medical emergency that happens when your body temperature rises above 40°C (104°F) because its natural cooling system fails. It usually occurs during extremely hot weather, high humidity, or intense physical activity in the heat.
Common symptoms of heatstroke include:
- Severe headache
- Nausea or vomiting
- Dizziness or fainting
- Dry, hot skin with little or no sweating
- Rapid heartbeat and breathing
- Muscle cramps or confusion
- Flushed, red skin
Children, older adults, and people with chronic illnesses may develop symptoms more quickly and severely.
What to Do If Someone Has Heatstroke
Heatstroke needs immediate action — every minute counts. Delaying care can lead to serious complications. If you or someone near you shows signs of overheating, act fast.
- Move the person to a cooler place. Get them out of the heat right away. Move to a shaded area, under a canopy, or into an air-conditioned or well-ventilated space. Avoid direct sunlight and stuffy environments.
- Lay them down flat. Have them lie on their back and, if possible, raise their legs about 12 inches. This helps improve blood flow to the heart and may prevent fainting.
- Cool the body down. Lowering body temperature is the top priority in the first few minutes:
Gently sponge the skin with cool (not ice-cold) water or wrap them in a damp sheet or towel.
If you have a fan, turn it on. If not, fan them manually to help moisture evaporate and bring the temperature down.
Apply cold compresses or water bottles to areas with large blood vessels — the neck, armpits, and groin. This can effectively lower internal temperature.
- Offer water. If the person is conscious, give them small sips of cool (not icy) water. Don't offer fizzy drinks or anything too cold. If they feel nauseated or start vomiting, stop giving fluids.
- Monitor their condition. Never leave them alone. Keep checking their breathing, pulse, and consciousness. If their condition worsens, start CPR if needed.
Call an ambulance immediately if the person loses consciousness, has seizures, or their symptoms are getting worse.
How to Prevent Heatstroke
It's much easier to prevent heatstroke than to treat it. Following a few simple rules can help you stay safe even on the hottest summer days. Here's what to keep in mind:
- Avoid physical activity during peak heat (between 11:00 a.m. and 4:00 p.m.). This is the hottest part of the day. If you must go out, limit your time in the sun and stick to shaded areas.
- Dress for the weather. Wear lightweight, loose-fitting clothes made of breathable materials like cotton or linen. Light colors help reflect heat. Always wear a hat — a cap, wide-brimmed hat, or bucket hat works well.
- Stay hydrated. Water is your best friend. Drink regularly, even if you're not thirsty. Avoid too much coffee, tea, or alcohol — they can cause dehydration.
- Avoid stuffy, poorly ventilated spaces. Use fans, air conditioning, or open windows to keep air flowing. If possible, stay indoors in cool spaces during heatwaves.
- Take breaks when exercising or working outdoors. Stop often, drink water, and rest in the shade.
- Watch out for vulnerable groups. Kids, seniors, pregnant women, and people with chronic conditions (especially heart disease) are more at risk. Keep an eye on how they're doing, and never leave them in hot spaces too long.
Also read: Why is UV exposure dangerous?
Heatstroke is a dangerous condition that needs urgent help. Spotting the signs early and acting fast can save lives. But the good news is, it's far easier to prevent heatstroke than deal with its consequences. So when the temperatures rise, take care of yourself and your loved ones. Follow these simple tips to enjoy the summer safely and stay healthy.
Frequently Asked Questions
What are the first signs of heatstroke?
Early symptoms include headache, dizziness, weakness, nausea, dry and hot skin, rapid heartbeat, and confusion. In serious cases, a person may faint or have seizures.
How is heatstroke different from sunstroke?
Sunstroke is actually a type of heatstroke caused specifically by direct sunlight on the head or neck. But heatstroke can also happen in the shade or indoors, if the body can't cool down due to high heat or humidity.
Can heatstroke be prevented?
Yes. Avoid intense activity during the heat, wear light clothing, drink plenty of water, stay in the shade or cool areas, and monitor how you feel. It's especially important to watch over children, the elderly, and those with chronic health conditions.
