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Miliaria, commonly known as heat rash, sweat rash, or prickly heat, [1] is a skin disease marked by small, itchy rashes due to sweat trapped under the skin by clogged sweat-gland ducts. Miliaria is a common ailment in hot and humid conditions, such as in the tropics and during the summer. [ 2 ]
Sweating can trigger intense itching or cholinergic urticaria. The protein MGL_1304 secreted by mycobiota (fungi) present on the skin such as Malassezia globosa acts as a histamine or antigen . People can be desensitized using their own samples of sweat that have been purified that contains small amounts of the allergen.
Sweat Therapy: Forced perspiration by excessive body warming (sauna, hot bath, or exercise) used daily may reduce the symptoms through exhaustion of inflammatory mediators. [ 7 ] Antihistamines: are a commonly prescribed first-line treatment for conventional urticaria, but its effectiveness in the treatment of CU is rather limited in most cases.
"Heat rash, or miliaria, is the red bumpy rash that occurs when your skin is irritated from heat and perspiration from blockage of the sweat glands," says Dr. Susan Massick, MD, the associate ...
The tell-tale signs of heat rash are typically itching or a stinging sensation that persists, Dr. Garshick says. ... sweat leaks out of the sweat gland into the skin, causing firm, skin-colored ...
Acne can worsen with heat because increased sweat can lead to more clogged pores. ... This dry, flaky, often itchy skin can exacerbate conditions like eczema. Extreme dry conditions can also spark ...
The exact mechanism of the condition is unknown. Some studies have suggested the itching occurs in response to increased fibrinolytic activity in the skin, [5] [6] inappropriate activation of the sympathetic nervous system, [7] increased activity of acetylcholinesterase, [8] [9] or an increase in mast cell degranulation that releases histamine and other chemicals into the body.
Contact dermatitis: The most common cause of itchy armpits, per Dr. Shamban, this happens when something touches your skin (i.e. a deodorant, fragrance, or detergent) and causes irritation. It ...
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