When summer heat settles into Cleveland, whether you’re out walking the Greenway or spending the afternoon at Fletcher Park, it’s important to know the difference between heat exhaustion and the more serious, life-threatening heatstroke. Recognizing the early signs and acting quickly can make all the difference. 

What Is Heat Exhaustion and How It Starts 

Heat exhaustion happens when your body overheats gradually, often due to a mix of high temperatures, humidity, and physical activity. Common signs include: 

• Heavy sweating and pale, moist (clammy) skin 
• Fatigue, weakness, or dizziness 
• Headache, muscle cramps, nausea, or feeling faint 
• A rapid but weak pulse, increased thirst, or decreased urination 

If untreated, heat exhaustion can progress into heatstroke so taking these symptoms seriously matters. 

Heatstroke: When It’s an Emergency 

Heatstroke occurs when the body’s temperature-regulation system fails and core temperature rises to dangerous levels. It’s a medical emergency requiring immediate care. Watch for: 

• Very high body temperature (104°F or higher) 
• Hot, dry, or flushed skin (sweating may stop) 
• Rapid pulse and fast, shallow breathing 
• Confusion, irritability, slurred speech, dizziness, or loss of consciousness 
• Nausea or vomiting 

If you suspect heatstroke, call 911 or seek emergency care right away. Every minute counts. 

First-Aid & Prevention Tips 

Whether you’re gardening, walking your favorite local trail, or spending the day outside, you can reduce your risk by: 

• Drinking water consistently throughout the day 
• Avoiding strenuous outdoor activity between 10 a.m. and 4 p.m. 
• Wearing lightweight, breathable, light-colored clothing and sun protection 
• Taking frequent breaks in shade or air conditioning 
• Slowing down and cooling off immediately if you notice dizziness, nausea, or heavy sweating 

When to Get Medical Care 

While heat exhaustion often improves with cooling down, hydration, and rest, you should seek urgent medical care if you or someone else experiences: 

• Confusion, disorientation, or slurred speech 
• Fainting or loss of consciousness 
• A rapid or irregular heartbeat 
• Severe nausea or vomiting 
• Symptoms that worsen or don’t improve after cooling 

Heat-related illnesses can escalate quickly, but recognizing early symptoms and knowing when to seek help can prevent serious complications. If your symptoms worsen or you’re unsure what you’re experiencing, AFC Cleveland is here with quick, convenient walk-in care to help you recover safely.