Images, symptoms, causes and treatments of heat rash

Filed in: Diseases & Conditions.

The function of the skin

The body cools just by sweating, and allowing that sweat or perspiration to evaporate.

Your skin is your first line of defense from the outside world. It protects you from infections, chemical exposures and harmful ultraviolet light. It also helps regulate the temperature inside your body producing sweat. Sweat on the skin comes from the sweat glands located throughout the body (except the fingers, toenails and ear canals). These small glands are regulated by the brain and produce sweat that comes to the surface through the ducts of the skin, which then evaporate and help you cool down.

What is heat rash?

Image of clogged sweat ducts, which causes heat rash. "src =" https://images.onhealth.com/images/slideshow/heat-rash-s2-illustration-of-heat-rash.jpg

Heat rash (spiny or miliary heat) is a mild inflammation of the obstructed sweat ducts. When the sweat ducts are blocked, sweat can not reach the surface of the skin to evaporate and is trapped under the skin. The rash is characterized by small raised bumps (such as coarse sandpaper) that are evenly distributed in small patches of skin. The rash usually goes away on its own and resolves within hours or a few days.

What are the symptoms of heat rash in children and adults?

The common symptoms of heat rash are red bumps on the skin and a feeling of itchy or itchy skin. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s3-photo-of- miliaria-rubra.jpg

Common symptoms of heat rash include a fine, lumpy rash, itching, burning skin, and a "pricking" sensation (as if something is crawling on the skin). The most common parts of the affected body are the areas commonly exposed to the sun, such as the hands, face, neck and elbow creases. Heat rash can also affect areas covered by tight clothing, such as the abdominal wall, groin, wrinkles on the thighs, buttocks, and the area below the breasts.

Types of heat rash

There are four types of heat rash; clear (miliaria crystalline), red (miliaria rubra), white / yellow (miliaria pustulosa) and deep (miliaria profunda). "src =" https://images.onhealth.com/images/slideshow/heat-rash-s4- chart-of-heat-rash-types.jpg

The four types of heat rash (miliaria) are named for the way they look on the skin (visual characteristics) and are analyzed in the following slides:

Claro (miliaria crystallina), Red (miliaria rubra), White / Yellow (miliaria pustulosa), Profundo (miliaria profunda).

Eruption by Calor Claro (Miliaria Crystallina)

Image of a heat rash (miliary crystalline). "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s5-photo-of-miliaria-crystalline.jpg

Miliaria's crystalline, or heat rash, looks like tiny beads of transparent sweat on the top layer of skin. It is usually very mild and does not produce many uncomfortable symptoms.

Red heat rash (Miliaria Rubra)

Image of red heat eruption (miliaria rubra), also known as spiny heat. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s6-photo-of-miliaria-rubra-2. jpg

The heat rash (miliaria rubra) is the most common form of heat rash. This type is also called "thorny heat" due to its intense symptoms of itching and burning. The sweat glands are blocked and the inflammation causes a red color in the eruption known as "rubra" (hence the name miliaria rubra).

White / yellow heat rash (miliaria pustulosa)

Image of a white / yellow heat rash (miliaria pustulosa). "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s7-photo-of-miliaria-pustulosa.jpg

When pustules form in a case of red heat eruption, it is called white / yellow heat rash (miliaria pustulosa). These pustules can be the first signs of a skin infection and should be checked by your doctor.

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Deep heat rash (Deep Miliaria)

Image of the deep heat eruption (miliaria profunda). "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s8-photo-of-miliaria-profunda.jpg

With repeated episodes of heat rash, the sweat glands in larger areas of the skin can chronically inflame and cause damage to the deeper layers of the skin. When this happens, large, firm lumps may appear, especially after exercise or exposure to heat. This is called a deep heat rash (miliaria profunda).

What are the causes of the heat rash?

The heat rash can be caused by several factors, including wrinkles on the skin, tight or heavy clothing, creams and heavy lotions, and the side effect of medications. "Src =" https://images.onhealth.com/images/slideshow/heat -rash-s9-photo-of-man-covering-face.jpg

The blocked sweat glands are the main cause of the heat rash. Sweat glands can be blocked for many reasons, but the most common reasons include:

The skin around the neck, armpit or groin that touches or rubs the adjacent skin prevents the evaporation of sweat. Clothing tight around the waist, abdomen, chest or groin to prevent evaporation of sweat. Sheltering in heavy clothing where sweat can accumulate on the skin. Heavy creams, oily lotions or adhesive bandages can clog the sweat ducts.

Who is at risk for heat rash?

Newborns, babies and the elderly are at risk of developing a heat rash. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s10-photo-of-senior-couple-at-beach.jpg

Some situations can make the heat rash more likely, which include:

Newborns or babies (especially with diapers or tight clothing) Older people who may not realize how much they are perspiration or do not change your clothes frequently Living in hot, humid climates Working in warm, confined spaces where sweat prevails

Why are babies so prone to heat rash?

Babies are more prone to heat rash due to immature sweat glands that can not get rid of all the sweat they produce. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s11 -photo-of-baby-with-heat-rash.jpg

Young children often have heat rashes because their sweat glands are immature and can not get rid of the sweat they produce. This is common when children are too clothed, warm for cold weather or have a fever.

How is the heat rash diagnosed?

The diagnosis of heat rash is made by physical examination. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s12-photo-of-doctor-examining-patient.jpg

The diagnosis of heat rash is made by observing the characteristic rash in certain common locations of the skin, especially after exposure to known heat. A doctor can usually make the diagnosis with a visual examination of the rash. However, complicated or atypical cases may require confirmation of skin culture, skin scrapings or biopsy. Other skin conditions can mimic a heat rash, including allergic reactions, bacterial infections, fungal infectionsor eczema.

Home remedies for heat rash

The heat rash often resolves on its own, but some home treatments can help, including calamine lotion and over-the-counter hydrocortisone sprays or creams. "Src =" https://images.onhealth.com/images / slideshow / heat-rash- s13-photo-of-cream-applied to womans-skin.jpg

The heat rash is usually self-limiting, which means that it resolves on its own without treatment. OTC treatments such as calamine, hydrocortisone cream, itching preparations (such as Benadryl's spray), or sunburn lotions can be used to treat itching and burning symptoms. .

Medical treatment for heat rash

If the heat rash does not resolve on its own and / or becomes infected, antibiotic treatment may be required. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s14-photo-of-doctor-writing-prescription.jpg

Occasionally, the heat rash may become infected, especially if it has been scratched. Bacteria can invade the skin and cause cellulite infections. The doctor should control symptoms such as redness, swelling, increased pain, fever or pustules. Treatment with antibiotics with topical creams or medications taken by mouth may be necessary to treat infections associated with the heat rash.

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How can heat rash be prevented?

The heat rash can be prevented by allowing the skin to be exposed to the circulating air and decreasing the possibility that the sweat glands become inflamed. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s15- photo-of-woman-cooling-down-with-fan.jpg

Preventing the sweat glands from clogging is the best way to prevent heat rash. Wear loose, breathable clothing. Avoid exercising in hot, humid climates. Keep skin dry, especially in areas such as wrinkles or wrinkles on the skin where sweat may accumulate. Stay in the air conditioner whenever possible if you are prone to heat rash.

How to protect yourself when temperatures are extremely high

To avoid heat-related illnesses, take frequent breaks to get out of the heat, and drink plenty of fluids to replenish the fluid lost by sweating. "Src =" https://images.onhealth.com/images/slideshow/heat- rash- s16-photo-of-sun-in-sky.jpg

Up to a point, your body can acclimatize to the hot, humid weather over time. Try to avoid working or exercising during times of extreme heat. Take frequent breaks to cool off, drink plenty of fluids, and stop activities if you feel overheated, dizzy, or dizzy.

Before exercising in hot and humid climates, keep in mind the temperature and also the heat index. The heat index is a calculated measure of the general feeling of heat and humidity. Since sweat can not evaporate if the water content in the air (humidity) is high, sweat alone can not cool the body.

How much water should I drink in hot weather?

In a hot environment, a person should drink enough water to clean the urine and make sure the body produces sweat. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s17- photo-of-man-sweating.jpg

It is difficult to know if you are dehydrated and need to drink more water because of the amount of sweat. If you are dehydrated, your kidneys will try to retain as much water as possible in your body. This results in a decrease in the production of urine and the urine that is eliminated can be dark or concentrated. In hot environments, a good rule of thumb is to drink enough fluids to make your urine look light or slightly yellow.

Should I take salt tablets during the heat?

Drink water and sports drinks (Powerade, Gatorade) to replenish the body with electrolytes instead of salt tablets in hot weather. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s18-photo-de-botella-de-Pills.jpg

Do not take salt tablets to replace your electrolytes when you sweat excessively. They can be harmful or replace too much sodium, which can cause problems with your blood pressure, kidneys or heart. Simple water will help hydrate better.

What is the best clothes for hot weather or a heat wave?

Lightweight and loose clothing allows air circulation to the body surface and helps promote cooling during hot weather. "Src =" https://images.onhealth.com/images/slideshow/heat-rash-s19-photo-of-family-at -beach.jpg

Sweating cools the body by evaporation, which moves the heat away from the skin. If sweat is not allowed to evaporate due to tight clothing or certain non-breathable fabrics, this puts you at risk of overheating or heat rash. Wear clothing made of fabrics such as cotton or synthetic fabrics designed to "absorb" the skin's sweat to help it evaporate when you exercise or expect to be exposed to heat.

Reference: https://www.onhealth.com/content/1/heat_rash

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