24/7 Emergency Room in Irving, TX
A core temperature above 104 damages organs within minutes, and Texas summers deliver it. Rapid cooling, IV fluids and core monitoring, 24/7.
Heat stroke is what happens when the body’s cooling system fails. Sweating stops working, core temperature climbs past 104, and the brain, kidneys and muscles start taking damage. Per the CDC, it is the most serious illness on the heat spectrum.
It comes in two forms. Classic heat stroke strikes vulnerable people during heat waves, often indoors without air conditioning, and the skin turns hot and dry. Exertional heat stroke hits athletes and outdoor workers mid-effort, often while still sweating heavily.
The tell is the mind: confusion, slurred speech, or collapse in a hot person is heat stroke until proven otherwise.
Medically reviewed by the ER of Irving Medical Team | Updated: July 2026
The first two mean call 911 and start cooling on the spot. Heat stroke is one of the few emergencies where cooling comes before transport.
Confusion, slurred speech, or odd behavior in a hot person is heat stroke until proven otherwise. Call 911.
Collapse or a seizure during heat exposure is a 911 emergency. Start cooling while you wait.
The threshold where organ damage begins, and every minute above it counts.
Sweating has failed. Athletes with exertional heat stroke may still be drenched.
A fast, strong pulse as the heart works overtime to shed heat.
A severe headache with nausea or vomiting after sun or heat exposure.
August two-a-days are prime time for exertional heat stroke. Cool first, transport second.
Children, older adults, and anyone without air conditioning during a heat advisory.
The protocol has one priority: get the core temperature down, fast.
Cold-water immersion, mist and fans, and ice to the neck and groin until the core reaches 102.
A core probe, because skin and oral readings lie during heat stroke.
Saline resuscitation, with sodium, potassium and calcium corrected as labs return.
Labs catch muscle breakdown before it clogs the kidneys, with ICU coordination for severe cases.
While waiting for EMS: move the person to the coolest space available, strip excess clothing, soak them with cool water or wet towels, and aim a fan at them. Roll an unconscious person onto their side, and never give fluids by mouth to someone confused.
North Texas earns this page. The DFW heat index tops 105 from June to September, and humidity keeps sweat from evaporating, so the body cannot shed heat. Outdoor workers and August athletes carry the highest risk, and prevention is unglamorous but real: water on a schedule, electrolytes during long efforts, morning work hours, and 10 to 14 days of acclimatization.
Milder heat illness overlaps with dehydration, and our heat stroke vs heat exhaustion guide walks the full spectrum.
Judge by the mind and the thermometer, not by how tough the person usually is.
Confusion, collapse, seizures, or a temperature at 104 and climbing. Start cooling on the spot; every minute above 104 costs organ function.
Heavy sweating with headache, cramps and exhaustion that do not improve within 30 minutes of shade and fluids. That is heat exhaustion sliding toward trouble.
Mild cramps or fatigue with clear thinking: shade, water with electrolytes, and rest. Improvement should be obvious within the hour.
Heat exhaustion means cool, sweaty skin, fatigue and headache with a clear mind, and it responds to shade and fluids. Heat stroke means a core temperature of 104 or higher with confusion, seizures, or unconsciousness. The mental status change is the line: once thinking changes, call 911.
Yes. Classic heat stroke is common during heat waves in homes without working air conditioning, especially for older adults and infants. It can build over days as the body slowly loses the ability to compensate. Check on elderly neighbors during heat advisories.
Without cooling, heat stroke can be fatal within an hour, and every minute the core stays above 104 adds organ damage. That is why cooling starts immediately, on the field or in the driveway, before and during transport.
Rhabdomyolysis is muscle tissue breaking down and releasing proteins that clog the kidneys. It is a common complication of exertional heat stroke and the main reason a collapsed athlete needs ER-level labs and IV fluids rather than a cool-down on the sidelines.
Drink 16 to 32 ounces of water per hour on a schedule, add electrolytes past the second hour, take shade breaks every 20 to 30 minutes, and shift heavy work to morning. New workers and early-season athletes need 10 to 14 days to acclimatize. And never leave anyone in a parked car.
Emergency care is protected. Under the federal No Surprises Act and Texas Department of Insurance balance-billing rules, patients are shielded from surprise balance bills for emergency treatment. We post all required Texas disclosures and can discuss costs with you on arrival.
Cold-water immersion, IV fluids and continuous core monitoring, all summer long. Call 911 for confusion or collapse. We are here 24/7.
