A heat rash is a condition where the sweat glands cannot release sweat because it has been blocked which causes an inflammation of the skin. Usually, heat rash is harmless and would disappear within a couple of minutes or hours but there are cases where medical attention is needed.
The common area where heat rash develops is skin folds and where clothing caused friction. The groin, armpits, and elbow creases are also places where heat rash can occur.
Different types of heat rash
- Miliaria crystallina, the mildest form of heat rash where the top layer sweat ducts are affected. Clear blisters with fluids and bumps are the symptoms of this type.
The reason why heat rash happens is when your sweat ducts cannot release sweat, the sweat gets trapped under the skin and causes inflammation. - Miliaria rubra (sometimes called prickly heat) is the type that affects deeper parts of the skin. Itching, red bumps, or prickling in the affected area are the symptoms of this type.
- Miliaria pustulosa is where the sacs that contain fluid from the miliaria rubra condition become inflamed and develop pus.
- Miliaria profunda, an uncommon type of heat rash where the dermis is affected.
The reason why heat rash happens is when your sweat ducts cannot release sweat, the sweat gets trapped under the skin and causes inflammation.
Causes
- The sweat ducts haven’t developed fully; this is common in infants.
- Tropical climates, as they contain hot and humid weather which cause heat rash.
- In addition, physical activities that make you sweat heavily which can lead to heat rash.
- Overheating
- Lastly, heat rash is usually healed when you cool the skin and avoiding heat exposure. Generally, if the rash doesn’t go away after a few days and symptoms worsen, it’s time to see a doctor.
When to see a doctor
- You notice that pus is coming from the skin lesions.
- There is an increase in pain, swelling, and redness around the rash.
- Your lymph nodes swell around the armpits, neck, or groin area.
- You develop a fever.
Prevention
- Dress lightly if the day is hot like in the summer, only dress heavier if the day is cold such as in the winter.
- Refrain from wearing tightfitting clothing.
- Keep yourself cool, when the day is hot, avoid direct sunlight or be in a room with a fan or air conditioner.
FACT CHECK
https://www.medicinenet.com/heat_rash/article.htm
https://www.webmd.com/skin-problems-and-treatments/picture-of-heat-rash
https://www.mayoclinic.org/diseases-conditions/heat-rash/symptoms-causes/syc-20373276