Certain tranquilizers and drugs used to treat Parkinson's disease interfere with perspiring. These symptoms can also signal other major problems, such as heart failure. Again, if you experience any of them, call a doctor immediately. The best advice for avoiding heat stress is to keep as cool as possible. If you don't have air conditioning, spend as much time as possible in cool shopping malls, senior centers, libraries, movie theaters, or in the coolest room in your home.
Air movement reduces heat stress by removing extra body heat.
Don't wait until you are thirsty to have a drink. Special Precautions .Curtail physical activity during extremely hot weather. Activity adds to heart strain. They add heat to your body. .Watch salt use. Check with your doctor before increasing the amount of salt or potassium in your diet.