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Doctor insights on: How Long Does Heat Rash Last

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How long can heat rash last?

How long can heat rash last?

1 week: Depending upon the depth of the reaction. But essentially 7 days. ...Read more

Heat Rash (Definition)

The medical term is miliaria. A heat rash is a skin irritation that typically occurs during hot or humid weather. It results when sweat ducts are blocked, and sweat builds up under the skin. Symptoms of a heat rash include small red bumps and vesicles that ...Read more


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How long can a heat rash last? I'm not sure if its a heat rash or something else, he's had it for a few days. Its light and bumpy

How long can a heat rash last? I'm not sure if its a heat rash or something else, he's had it for a few days. Its light and bumpy

&itchy & annoying?: Prickly heat / heat rash can last several days if not treated and if still exposed to the hot environment (particularly if also humid). Simple fix sometimes is to dry w/powder few times/day, if fails, might need dr visit for mild topical steroid or other treatment options. ...Read more

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Developed a heat-rash on belt line while traveling in HOT humid weather last week. Keeping it clean, dry, cool, with no improvement 3 days. Fungal?

Developed a heat-rash on belt line while traveling in HOT humid weather last week. Keeping it clean, dry, cool, with no improvement 3 days. Fungal?

Possibly: If itchy, quite likely fungal(times corporate). If sore, painful, blistering or seeping discolored fluids, you have a secondary bacterial infection(cellulitis). Please see your physician ...Read more

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I get heat rash on my forehead when I golf and it's above 90 degrees. It only lasts for a few days. Preventative ideas?

I get heat rash on my forehead when I golf and it's above 90 degrees. It only lasts for a few days. Preventative ideas?

Heat rash: If the rash only occurs on your forehead when golfing, it might be related to the type of headgear you wear. Experiment with looser caps,wide brim hats, netted caps,absorbent material containing caps. Try taking your cap or visor off for a few seconds periodically during your round. ...Read more

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Heat rash was itchy but now feels like it burns on fold of skin between chest and stomach, how long does it take to heal and anyway to speed it up?

Heat rash was itchy but now feels like it burns on fold of skin between chest and stomach, how long does it take to heal and anyway to speed it up?

A week: It can take several days to a week for a mild skin rash to heal. If you have an extensive area of involvement or a more serious rash it could be a bit longer. Moisturizing lotions and keeping the area cool and free of friction ot rubbing may help. ...Read more

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10weeks after unprotected sex with my ex I developed tiny, itchy pimples on my back. They lasted 2/3days. Could they be a HIV symptom? Or a heat rash?

Not an HIV symptom: It is not possible to diagnose the cause of your rash, without more info, and a photo of it. However, be reassured that what you described is NOT consistent with symptoms/signs of HIV, SInce you had unprotected sex with your ex, and appear to be concerned about having contracted an STI, I recommend that you go for STI screening, including HIV, and use condoms. Most counties provide free testing ...Read more

See 2 more doctor answers
Dr. John Chiu
2,616 doctors shared insights

Skin Rash (Definition)

A skin rash is a symptom in which a person has changes on part or all of his skin, such as color changes, bumps, blisters, oozing, peeling, ...Read more


Dr. Cornelia Franz
1,059 doctors shared insights

Rash (Definition)

A rash is a change to skin condition which can affect color, appearance, or texture. It may or may not ...Read more