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Doctor insights on: Heat Rash On One Arm

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Hi there. I have fine pimples on my arms. Could this be a heat rash ?

Hi there.   

I have fine pimples on my arms.  Could this be a heat rash ?

It could be...: hard to tell without seeing it. It could be a reaction to something you were exposed to, could be dry skin, could be something called keratosis pilaris, which is basically excessively dry skin and hard to treat, but not dangerous. Please see your doctor; it will be easier to diagnose in person, or you can consult one of us on Prime. ...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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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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Iv got an 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 an 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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My 1 month old son keeps getting red bumps all over his face chest and upper arms on and off. Could this be heat rash, or can he possibly be allergic to the baby wash I use for his bath?

My 1 month old son keeps getting red bumps all over his face chest and upper arms on and off. Could this be heat rash, or can he possibly be allergic to the baby wash I use for his bath?

Could be either: Hold this baby wash for now, usr something else, keep him dry as much you can, if the rash keeps coming see your baby's doctor ...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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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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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. ...Read more

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How can I identify if my baby has heat rash or eczema? Her rashes are red and its flaky on her face, because of dryness her cheek has a small cut now.

How can I identify if my baby has heat rash or eczema? Her rashes are red and its flaky on her face, because of dryness her cheek has a small cut now.

Eczema: Rashes with dry looking, flakes, itchy are likely to be eczema. Heat rash are pinpoint red rash. For eczema, you need a good moisturizer. ...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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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 as well. ...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?

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
2,663 doctors shared insights

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