Summer is finally here, and with it comes sunshine, outdoor fun, and rising temperatures. According to NBC News in June 2025 nearly half of the U.S. was baking under a severe heat wave, with over 150 million people across more than 20 states facing extreme temperatures, some reaching triple digits.
While summer brings plenty of fun in the sun, it’s important to stay aware of heat-related illnesses. The good news? Most are preventable if you recognize the warning signs and take quick action.
Types of Heat-Related Illnesses
Heat Stroke
This is the most serious heat-related illness and is a medical emergency.
Symptoms:
- High body temperature (103°F or higher)
- Hot, dry or damp skin
- Confusion, dizziness, or unconsciousness
- Rapid pulse
What to do: Call 911 immediately. Move the person to a cooler area and try to cool them down with cold cloths or a cool bath. Do not give them anything to drink.
Heat Exhaustion
This is often a precursor to heat stroke if untreated.
Symptoms:
- Heavy sweating
- Weakness or fatigue
- Nausea or vomiting
- Dizziness and headache
What to do: Move to a cool place, loosen clothing, sip water, and apply cool, wet cloths. Seek medical help if symptoms worsen or last more than an hour.
Heat Cramps
These muscle cramps often strike during or after strenuous exercise.
Symptoms:
- Painful muscle cramps, especially in legs or abdomen
What to do: Stop activity, move to a cooler location, and hydrate with water or electrolyte drinks. Avoid physical activity until cramps go away.
Sunburn
Sunburn is red, sore skin caused by too much sun exposure.
Symptoms:
- Red, painful and warm skin that may blister
What to do: Get out of the sun, cool the skin with damp cloths, use aloe vera or moisturizing lotion, and stay hydrated. Seek care if blisters are severe or cover a large area.
Heat Rash
Skin irritation from excessive sweating.
Symptoms:
- Small red bumps or blisters, often in folds of the skin
What to do: Keep the affected area dry, wear loose clothing, and stay in a cool environment.
Prevention Tips
- Stay hydrated by drinking water throughout the day
- Wear lightweight, loose-fitting clothing
- Avoid strenuous activity outdoors during peak heat hours (usually 10 a.m. to 4 p.m.)
- Use sunscreen and seek shade when possible
If you or a loved one experience heat-related symptoms that do not improve with at-home care, don’t wait for treatment—find an urgent care location near you.
Sources:
CDC.gov, CDC.gov, HopkinsMedicine.org, Weather.gov, nbcnews.com,