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Doctor insights on: Heat Rash On One Arm

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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.

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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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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.

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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.

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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.

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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.

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Heat rash inside elbow?

Heat rash inside elbow?

See below: Are you sure? If just heat rash, keep dry. If not, and the rash looks scaly, may be eczema and steroid cream might help.

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I have a severe itch in my right armpit along with rash in same area. Have had this for about 2-3 weeks. Thought it may be a heat rash?

I have a severe itch in my right armpit along with rash in same area. Have had this for about 2-3 weeks. Thought it may be a heat rash?

Armpit: It is likely to be from heat and sweating, an antifungal cream can help, sometiems you need to combine it with a steroid to stop the inflammation, see your doctor for a prescription.

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Are red itchy bumps inside elbow possibly heat rash?

Are red itchy bumps inside elbow possibly heat rash?

Many possibilities: There are many things that could cause the skin to itch. Several types of inflammatory conditions of the skin, allergic reactions, sun exposure, insect bites, and sometimes bacterial, viral or fungal infections can cause rashes on the skin. Have it evaluated by a professional and get the appropriate treatment.

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Is heat rash chronic? After I got one I kept getting them under certain situations heat hot fabric etc

Usually not: This sounds like it might be some type of allergic reaction issue and less a chronic heat rash issue. Might consider daily nonsedating any histamine for 1 to 2 weeks and see if symptoms improve or resolve. If so, can continue this medication. If not, recommend you see your doctor for evaluation. Hope this was helpful. Best of luck with this.

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My one old month baby has little bumps on face. Took him to doctor and said it was heat rash it's been 3 weeks and he still has them?

My one old month baby has little bumps on face. Took him to doctor and said it was heat rash it's been 3 weeks and he still has them?

Transiently: Babies often get a transient "baby acne" that is not present at birth (bathed in the waters of the womb) but comes out at a few weeks & lasts a few months. It is thought to result from maternal hormone effect which gradually declines as the baby ages. It will generally disappear without specific treatment.

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2 month old had a heat rash to neck 1 month ago. Enlarged lymph node appeared. Now new one appeared to other side-occipital? When worry lymphoma?

2 month old had a heat rash to neck 1 month ago. Enlarged lymph node appeared. Now new one appeared to other side-occipital? When worry lymphoma?

Infant lymph nodes: Hello. The enlarged node is most likely unrelated to the heat rash your infant had 1 month ago. Occipital nodes are more noticeable in infants because their skin is thinner. The nodes should be "rubbery" in feel and move easily. Most common reasons for enlargement would be a scalp rash like "cradle cap." You can get the nodes checked by the pediatrician, but they are probably normal.

Dr. John Chiu
2,641 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