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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

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Think got heat rash because dehydrated? Dry mouth? Reason why always feel dehydrated? Do psych meds create dehydration long after leaving body

Think got heat rash because dehydrated? Dry mouth? Reason why always feel dehydrated? Do psych meds create dehydration long after leaving body

Yes: These drugs can cause dry mouth. Dry mouth can cause serious dental problems, your teeth are much more at risk for decay. So drink water to hydrated, avoid sodas and juice, too much sugar and acid, chew xylitol or sugar free gums. Biotene dry mouth products are great. If you use mouthwash you need one without alcohol. ...Read more

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My 3 month old grandaughter has red rashes on her tummy and its weeping. How to treat it and is it heat rash?

My 3 month old grandaughter  has red rashes on her tummy and its weeping. How to treat it and is it heat rash?

Rash: This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed. ...Read more

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What is a heat rash?

What is a heat rash?

Fine red rash: Medical term -- miliria rubra. Fine red bumps all over sweaty areas, with sometimes burning, tingling or itching. Also called prickly heat. ...Read more

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What is a heat rash?

What is a heat rash?

Heat rashes occur: Heat rashes occur, and are not uncommon. Sometimes it's related to sweating a lot, with or without "blocked" sweat glands or oil glands. Other times it's related to sports equipment friction, bacteria, moisture, etc... Being in a hot tub can lead to a "hot tub" rashes. Rashes are difficult to describe in words, so it is best to have a doctor look at a rash. ...Read more

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Can heat rash spread?

Yes it can: It can spread if the heat and sweating continues, which causes the heat rash to start with so if you want to prevent the spread use airconditioning or fan and avoid heat and humidity. ...Read more

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Does heat rash spread?

Does heat rash spread?

Keep cooler: Heat rash usually resolves in a few days unless you continue to sweat too much. So dress in cooler clothes or remove a layer of clothes, blankets, etc. Try not to use any topical creams or ointments that can also hold in heat. Keep cooler and the rash should go away on its own. Cool water will feel good on the rash. Solarcaine gel would help with comfort also. ...Read more

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How to stop heat rash itch?

How to stop heat rash itch?

Cold compresses: For immediate relief cold compresses with milk on a paper towel to remove the heat from the skin. Oatmeal baths are soothing. Topical steroid lotion can also help. As a preventive an absorbent powder such as zeasorb. ...Read more

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Does heat rash always itch?

Does heat rash always itch?

Not always: There may be discomfort with heat rash, but is usually not described as itching. Always remember though, symptoms will vary greatly between patients, and itching is possible. ...Read more

Dr. John Chiu
2,622 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