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Doctor insights on: Heat Rash On Upper Arms

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Dr. Cornelia Franz
1,059 doctors shared insights

Rash (Definition)

Most bumps and blotches on a newborn baby are harmless and clear up by themselves. By far the most common skin problem in infants is diaper rash. Diaper rash is an irritation of the skin caused by dampness, urine, or feces. Most babies who wear diapers will have some type of diaper rash. However, there are other skin disorders that can cause rashes. These are usually not serious unless ...Read more


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Iv got a itchy rash under my up under my arms it looks like a heat rash how can I be sure that's what iy is?

Iv got a itchy rash under my up under my arms it looks like a heat rash how can I be sure that's what iy is?

Self-test: Try antifungal powder couple times a day for a few days--if improvement, that is likely what it is. If not, see your dr or a dermatologist for evaluation. ...Read more

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I have what looks like heat rash in both armpits. Its spreading down my arms & sides, but my arms & sides look like i have chicken pox. What's wrong?

I have what looks like heat rash in both armpits. Its spreading down my arms & sides, but my arms & sides look like i have chicken pox. What's wrong?

Pustular rash: This could be folliculitis or an irritated infectious rash from rubbing between your skin surfaces. I wonder if you've been hot and sweaty lately? Since it's spreading you should show a doc since it needs to be stopped. There are other things it could be like out of control fungus, contact allergy (any new deodorants?) or less likely the start of some viral infection--I doubt chicken pox tho. ...Read more

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Entire body feels as if it's burning, bumps all over my skin including stomach, thighs and arms. I think it's heat rash, but what can I do to cure it?

Entire body feels as if it's burning, bumps all over my skin including stomach, thighs and arms. I think it's heat rash, but what can I do to cure it?

Doctor can evaluate: Rashes are hard to describe in words. Usually, a doctor has to look at a rash to see what it might be. For common rashes such as eczema, mild reactions to plants or chemicals, excessive dryness, or little itchy bumps, over-the-counter Hydrocortisone 1% cream for 1 week, usually helps. A doctor can help figure out the cause, look for internal disorders, and decide if Claritin (loratadine) or zyrtec would help. ...Read more

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Baby has pimples that turn red with sweat or bath but stay white when normal on back, chest, and arms. Is it acne, heat rash, or allergy from vaccine?

Baby has pimples that turn red with sweat or bath but stay white when normal on back, chest, and arms. Is it acne, heat rash, or allergy from vaccine?

Baby Pimples: Baby pimples or acne , which can be light colored and on various body parts as you describe, often become a bit darker on certain conditions like exposure to heat/water or agitation/crying. These should gradually fade away in a couple of months. Get these checked by your baby's pediatrician at his next regular check to get reassurance re their benign nature. ...Read more

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Red rash on face and arm that looks like heat rash/prickly heat. What can I do to make it go away?

Depends on the cause: There are many types and causes of skin rashes that could cause itching. Several types of inflammatory conditions of the skin, allergic reactions, and sometimes bacterial, viral or fungal infections can cause rashes on the skin. Insect bites can also be the cause of a rash on the skin. Have it evaluated by a professional and get the appropriate treatment. ...Read more

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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


Dr. John Chiu
2,559 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