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Doctor insights on: Causes Of Heat Rash On Knees

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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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Husband has very red skin w/yellow blisters in his crotch and inside leg area. Temperature 99.9. Yesterday just looked like a heat rash w/itching and burning. Today seems much worse. The reddest I have ever seen

Husband has very red skin w/yellow blisters in his crotch and inside leg area. Temperature 99.9.  Yesterday just looked like a heat rash w/itching and burning.  Today seems much worse.  The reddest I have ever seen

This : This rash could be a few different things. - impetigo is a skin infection caused by bacteria - either streptococcus or staph. This needs to be treated with antibiotics. - contact dermatitis is skin inflammation. It can be caused by plants such as poison ivy or poison oak or it can be from contact of a chemical or item that a person is particularly sensitive to. This is usually treated with steroid creams or oral steroids. - viral illness such as chicken pox, shingles or herpes can also cause painful blisters on a red base. This can be treated with anti-virals or just needs to run its course depending on the severity of the infection. The best thing to do is to contact his doctor and have him seen, since each possible problem requires different treatments. Good luck. ...Read more

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Recurring heat rash in cold weather. Causes?

Recurring heat rash in cold weather. Causes?

Not likely heat rash: If your rash is occurring in cold weather, that is not likely heat rash. The term heat-rash refers to a rash occurring due to excessive heat. Eczema is often worse in cold and dry weather and so you may want to have it checked out. Without knowing what the rash looks like and its distribution on the body, it is difficult to make a diagnosis. So, consult doc. Good luck. ...Read more

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What is the cause of heat rash? Some people tolerate heat well

What is the cause of heat rash? Some people tolerate heat well

Heat rash: The real heat rash is called Milaria and there are several forms. It may be caused by the occlusion of sweat glands for unknown reasons in most cases. Occlusion, like wearing tight shirts or sitting against leather or vinyl chairs, can lead to this. Commonly, this is seen in bedridden patients. ...Read more

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My 5 month old is cold and sweating and keeps getting bumps on her that looks like a heat rash what could be the cause?

My 5 month old is cold and sweating and keeps getting bumps on her that looks like a heat rash what could be the cause?

Sweating with rash: You should take your daughter to your doctor for an examination to see what the problem is. ...Read more

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Took a trip to the beach and got severe heat rash leading to itching. Does psych medicine cause skin to not sweat and create heat rash? Treatments?

Took a trip to the beach and got severe heat rash leading to itching. Does psych medicine cause skin to not sweat and create heat rash? Treatments?

Psychiatric Meds: Some psychiatric medications make a person more senstive to the sun, ask your doctor or pharmacist for help regarding your particular medications. You can also research all psych meds on the soundmindz.Org web site. Best. ...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

Dr. John Chiu
2,618 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