Posted by on Wednesday, July 22, 2015
Humidex values near 40 degrees are possible in the Red River Valley on Thursday as daytime temperatures reach the low thirties with dewpoint temperatures in the low twenties.
With heat comes several medical concerns.
Heat-related illnesses include:
Heat rash (prickly heat), which occurs when the sweat ducts to the skin become blocked or swell, causing discomfort and itching.
Heat cramps, which occur in muscles after exercise because sweating causes the body to lose water, salt, and minerals (electrolytes).
Heat edema in the legs and hands, which can occur when you sit or stand for a long time in a hot environment.
Heat tetany (hyperventilation and heat stress), which is usually caused by short periods of stress in a hot environment.
Heat syncope (fainting), which occurs from low blood pressure when heat causes the blood vessels to expand (dilate) and body fluids move into the legs because of gravity.
Heat exhaustion (heat prostration), which generally develops when a person is working or exercising in hot weather and does not drink enough liquids to replace those lost liquids.
Heatstroke (sunstroke), which occurs when the body fails to regulate its own temperature and body temperature continues to rise, often to 105°F (40.6°C) or higher. Heatstroke is a medical emergency. Even with immediate treatment, it can be life-threatening or cause serious long-term problems.