When heat intensifies, your body's thermostat can fail, unable to regulate temperature effectively. This is sunstroke—a severe heatstroke requiring urgent vigilance. Even summer enthusiasts face real risks from excessive heat overwhelming the body.
The hypothalamus, your brain's key regulator of sweat production and thirst, gets overloaded. It fights to maintain core temperature around 37°C—optimal for vital organs. Hyperthermia threatens, with potentially serious complications.
Hyperthermia triggers symptoms like facial redness, headaches, widespread pain, dizziness, muscle cramps, nausea, and vomiting. Severe cases involve elevated respiratory and heart rates, low blood pressure, mental confusion, and chest oppression that may cause fainting.
Young children and the elderly, with limited thermal regulation, are especially vulnerable.
"Quickly lower body temperature to halt symptom progression," advises Dr. Loïc Etienne, emergency physician and co-author of You Have the Power to Change Your Health (Ed. Marabout).
Lie down in a cool area and apply damp cloths to arms, neck, and forehead. Sip plenty of water or lukewarm linden infusion to rehydrate and reduce fever.
Video of the day: But with significant nausea, agitation, extreme fatigue, loss of consciousness, or fever over 39.5°C, call SAMU (15) or seek a doctor immediately. Hospitalization may be essential to avert neurological, cardiac, or renal damage.
Avoid sun exposure during peak heat, 11 a.m. to 4:30 p.m.. Other risks lurk too.
Car interiors trap heat like greenhouses, reaching 50°C from infrared rays. Crack windows, use sun visors (or wet towels) on rear windows, or run AC. Never leave children or pets in a closed vehicle, even briefly.
Athletes: Intense activity generates extra internal heat. Skip midday jogging, cycling, or tournaments. Hikers, choose light-colored clothes to reflect infrared and wear hats.
Steer clear of alcohol, which worsens dehydration and disrupts thermoregulation.
(*) You Have the Power to Change Your Health by Dr. Loïc Etienne de Rica Étienne (Ed. Marabout). Available on Place des Libraires and Amazon.
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