Summer in Oklahoma means long days outside, but it also means your body is working overtime to stay cool. When temperatures climb, knowing the difference between heat exhaustion and heat stroke can be the thing that keeps a hot afternoon from turning into an emergency room visit. Both conditions come from the same root problem: too much heat and not enough hydration. But they call for very different responses.
At Memorial Health System, we see the effects of summer heat every year, from weekend yard work gone wrong to student athletes pushing through two-a-day practices. The good news is that heat illness is largely preventable once you know what to watch for.
Why Hydration Matters So Much in Summer
Your body cools itself primarily through sweat, and sweat is mostly water. As you lose fluids, your body has to work harder to regulate its temperature. Add in Oklahoma humidity, and sweat does not evaporate as efficiently. This means your internal temperature can climb even faster.
Staying ahead of dehydration is the single best defense against heat illness. It also makes it easier to spot the difference between heat exhaustion and heat stroke before things escalate. That means drinking water consistently throughout the day, not just when you feel thirsty. Thirst is actually a late warning sign that your body is already behind.
Heat Exhaustion
Heat exhaustion typically develops after hours of exposure to high temperatures combined with inadequate fluid intake. Look for:
- Heavy sweating
- Cool, pale, or clammy skin
- Fast, weak pulse
- Nausea or vomiting
- Muscle cramps
- Dizziness or headache
- Fatigue or weakness
If you or someone nearby shows these signs, move to a cooler location right away. Loosen tight clothing, sip water slowly, and apply cool, wet cloths to the skin. Most people improve within 30 minutes with these steps. However, if symptoms worsen or last longer than an hour, it is time to seek medical care.
Heat Stroke
Heat stroke is what happens when heat exhaustion goes untreated, and it is far more dangerous. The body’s temperature regulation system essentially shuts down. Watch for:
- Body temperature above 103°F
- Hot, red, dry or damp skin
- Rapid, strong pulse
- Confusion, agitation, or slurred speech
- Throbbing headache
- Loss of consciousness
Heat stroke is a true medical emergency. Call 911 immediately. While waiting for help, move the person to a cooler area and remove excess clothing. Use whatever means available to lower their body temperature, such as a cool bath, wet towels, or fanning. Do not give fluids to someone who is confused or unconscious, since this can cause choking.
Who Is Most at Risk
Certain groups face a higher risk of heat illness, including:
- Young children and older adults
- People with chronic health conditions like heart or lung disease
- Outdoor workers and athletes
- Anyone taking medications that affect the body’s ability to regulate temperature
If you fall into one of these categories, take extra caution during peak heat hours. That generally means between 10 a.m. and 6 p.m. Knowing the difference between heat exhaustion and heat stroke matters even more for these higher-risk groups.
Simple Steps to Prevent Heat Illness
Prevention comes down to a few consistent habits:
- Drink water regularly, even before you feel thirsty
- Wear lightweight, light-colored, breathable clothing
- Take frequent breaks in shaded or air-conditioned areas
- Avoid strenuous activity during the hottest part of the day
- Never leave children or pets in a parked car
Know the Difference and Act Quickly
Knowing the difference between heat exhaustion and heat stroke early can prevent a serious health crisis. Heat exhaustion is your body’s warning sign, while heat stroke demands immediate emergency care. When in doubt, always err on the side of caution and seek medical attention.
If heat illness strikes, don’t wait it out. Choose LCHC Rapid Care or ER at one of these convenient locations:
- Memorial Health: 3401 W Gore Blvd.
- Memorial Health Southwest: 5602 SW Lee Blvd.
At Memorial Health System, our team is here to support your family’s health all summer long. From urgent care visits to emergency services, we’re ready when every minute counts. Staying hydrated and heat-aware is one of the simplest ways to enjoy the season safely.
Resources:
https://www.cdc.gov/niosh/heat-stress/about/illnesses.html
https://www.weather.gov/safety/heat-illness
Disclaimer:
The Memorial Health System of Southwest Oklahoma (MHS) website does not provide specific medical advice for individual cases. MHS does not endorse any services obtained through information provided on this site, articles on the site or any links on this site.
Use of the information obtained by the Memorial Health System of Southwest Oklahoma website does not replace medical advice given by a qualified medical provider to meet the medical needs of our readers or others.
While content is frequently updated, medical information changes quickly. Information may be out of date, and/or contain inaccuracies or typographical errors. For questions or concerns, please contact us at contact@memorialhealthswok.com.