How to Protect Yourself from Extreme Heat: Symptoms and Prevention

Understanding Heat Illness

• ⚠️ Extreme heat poses a significant risk to health, often underestimated by many.
• 🏥 Emergency rooms are seeing patients with various signs of heat exhaustion and heat illness, and in severe cases, heat stroke.

Symptoms of Heat Exhaustion vs. Heat Stroke

• 🌡️ Heat exhaustion symptoms include headache, dizziness, profuse sweating, and excessive thirst, indicating the body's attempt to cool itself.
• 🧠 Heat stroke occurs when the body's cooling system fails, leading to organ suffering, confusion, seizures, and a body temperature above 105°F.
• 🚨 Untreated heat stroke can result in loss of consciousness, coma, and death.

The Impact of Humidity

• 💧 The body cools itself through evaporative cooling (sweat evaporation).
• 💨 High humidity prevents sweat from evaporating, trapping heat and causing the core body temperature to rise, inducing stress.

Recognizing and Responding to Heat Stress

• ❤️ Red flags include a racing heart rate or feeling overheated even in the shade, indicating a need to cool down quickly.
• 🧊 In emergencies, move to shade, cover with water, use a fan, and apply ice packs to large blood vessels (neck, armpits, groin) to facilitate cooling.

Fan Use and Cooling Centers

• 💨 A small study suggests fans may not reduce core body temperature in older adults, though they can provide comfort; the goal is core temperature reduction.
• 🏠 If unable to cool down at home, seek refuge in cooling centers, libraries, malls, or movie theaters during peak heat hours.
• 🤝 It is crucial to check on neighbors, especially the elderly, during periods of extreme heat.