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Dec 21, 2023 · Heat rash, also called prickly heat or miliaria, is caused by blocked sweat ducts. Here's how to prevent and treat it.
May 31, 2022 · Skin Health. Dermatology. Here’s How to Get Rid of Heat Rash, According to Dermatologists. Plus what those pesky bumps are, exactly. By Jessica Migala. Reviewed by Fatima Fahs, MD. May 31,...
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•Overview
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Sweat glands
Eccrine sweat glands occur over most of the body and open directly onto the skin's surface. Apocrine glands open into the hair follicle, leading to the surface of the skin. Apocrine glands develop in areas with many hair follicles, such as on the scalp, armpits and groin. Eccrine sweat glands are involved in hyperhidrosis, though apocrine glands may play a role as well.
Types of heat rash
The types of heat rash are classified according to how deep the sweat is trapped in the skin. Signs and symptoms for each type vary.
Heat rash usually heals by cooling the skin and avoiding exposure to the heat that caused it. See your health care provider if you or your child has symptoms that last longer than a few days or the rash seems to be getting worse.
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Heat rash develops when a duct that leads from a sweat gland to the surface of the skin is blocked or inflamed. This then blocks the opening of the sweat duct on the surface of the skin (sweat pore). Instead of evaporating, sweat is trapped beneath the skin, causing irritation and bumps on the skin.
Factors that increase the risk of heat rash include:
•Being a newborn, as newborns have immature sweat ducts
•Living in a hot, humid climate
•Being physically active
Heat rash usually heals without scarring. People with brown or Black skin are at risk of spots of skin that get lighter or darker in response to inflammatory skin conditions (postinflammatory hypopigmentation or hyperpigmentation). These changes usually go away within weeks or months.
A common complication is infection with bacteria, causing inflamed and itchy pustules.
To help protect yourself or your child from heat rash:
•In hot weather, dress in loose, lightweight clothing that wicks moisture away from the skin. Don't wrap newborns in too many layers.
•In hot weather, limit physical activity. Stay in the shade or in an air-conditioned building. Or use a fan to circulate the air.
•Keep your sleeping area cool and well ventilated.
•Avoid creams and ointments that can block pores.
•Avoid drugs that cause sweating, such as clonidine, beta blockers and opioids.
May 6, 2022 · Treatment. Treatment for mild heat rash is cooling the skin and avoiding exposure to the heat that caused the condition. Once the skin is cool, mild heat rash tends to clear quickly. Request an appointment.
May 2, 2024 · Skin Health. More Skin Conditions. Heat Rash Remedies: At-Home Treatment, Self-Care, and OTC Options. By Kathi Valeii. Updated on May 02, 2024. Medically reviewed by Katlein Franca, MD. Print. Table of Contents. Home Remedies for Heat Rash. Self-Care Methods. OTC Medications. How Long Does a Heat Rash Last? When to Seek Medical Care.
- Kathi Valeii
Mar 2, 2022 · A heat rash, prickly heat rash or sweat rash is a group of tiny pimples or blisters on your skin caused by sweat trapped in your glands. The rash can be painful or itchy. Treat the rash at home by keeping your skin cool and dry.
Apr 11, 2024 · Finding Relief. Managing Heat Rash. When to Call a Provider. Prevention. Heat rash, also known as eccrine miliaria , sweat rash, and prickly heat, is a skin rash that causes the skin to turn red and feel warm or prickly (stinging).
