Elderly people (that is, people aged 65 years and older) are more prone to heat stress than younger people.

Heat Stroke

Heat stroke is the most serious heat-related illness.

It occurs when the body becomes unable to control its temperature: the body’s temperature rises rapidly, the body loses its ability to sweat, and it is unable to cool down. Body temperatures rise to 106°F or higher within 10 to 15 minutes. Heat stroke can cause death or permanent disability if emergency treatment is not provided.

Signs and Symptoms of Heat Stroke

Warning signs vary but may include the following:

  • An extremely high body temperature (above 103°F)
  • Red, hot, and dry skin (no sweating)
  • Rapid, strong pulse
  • Throbbing headache
  • Dizziness
  • Nausea

Heat Exhaustion

Heat exhaustion is a milder form of heat-related illness.

Heat exhaustion can develop after several days of exposure to high temperatures and inadequate or unbalanced replacement of fluids.

Signs and Symptoms of Heat Exhaustion

Warning signs vary but may include the following:

  • Heavy sweating
  • Paleness
  • Muscle Cramps
  • Tiredness
  • Heavy sweating
  • Paleness
  • Muscle Cramps
  • Tiredness
  • Fainting
  • Skin: may be cool and moist
  • Pulse rate: fast and weak
  • Breathing: fast and shallow

What You Can Do to Protect Yourself

You can follow these prevention tips to protect yourself from heat-related stress:

  • Drink cool, nonalcoholic beverages. (If your doctor generally limits the amount of fluid you drink or has you on water pills, ask him how much you should drink when the weather is hot)
  • Avoid extremely cold liquids because they can cause cramps
  • Rest.
  • Take a cool shower, bath, or sponge bath.
  • If possible, seek an air-conditioned environment. (If you don’t have air conditioning, consider visiting an air-conditioned shopping mall or public library to cool off.)
  • Wear lightweight clothing.
  • If possible, remain indoors in the heat of the day.
  • Do not engage in strenuous activities.