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Doctor insights on: Pimple Like Rash On One Arm

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Dr. John Chiu
2,673 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


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I have non itchy rashes like pimples on my right arm (wrist to elbow) and a little on left arm. I am not on medication or has changed my diet.?

I have non itchy rashes like pimples on my right arm (wrist to elbow) and a little on left arm. I am not on medication or has changed my diet.?

Recent rash?: This may be from a viral infection or a drug reaction. If the problem goes away after 10 days, don't worry about it. If the rash persists, then see a dermatologist. If pus is present, consider impetigo It is unlikely to be an allergic reaction in the absence of itching. ...Read more

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Pinky Tiny Pimples-like Rashes on the back of both hands & starts to feel itchy after few hours...spreading to arm slowly...can I take Cetirizine?

Pinky Tiny Pimples-like Rashes on the back of both hands & starts to feel itchy after few hours...spreading to arm slowly...can I take Cetirizine?

You could but..: A better choice might be diphenhydramine (Benadryl) but the cetirizine is less likely to make you drowsy so you can start with that and if it doesn't work try the diphenhydramine. You can also try 1% hydrocortisone cream that you can get at the store on the rash to see if that alleviates the itching and the spread of the rash. ...Read more

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I have a rash on my arm. It's not too itchy. This morning it had stuff comin out of the pimple like dots. What should I do? What kind of rash is it?

I have a rash on my arm. It's not too itchy. This morning it had stuff comin out of the pimple like dots. What should I do? What kind of rash is it?

Rash: Rashes are hard to diagnose sometimes when you are looking at them. Impossible to diagnose without even seeing them. Sounds like yours may be infected. You need to see your doctor. ...Read more

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Pimple rash itchy on arms spreading?

Pimple rash itchy on arms spreading?

Folliculitis: Folliculitis is often seen in otherwise healthy people, it's easily curable in most cases and frequently clears on its own without treatment, though it may require ongoing maintenance therapy.
Antibacterial washes such as benzoyl peroxide are often used to treat folliculitis, and resistant cases may need antibiotic pills to clear the skin. ...Read more

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Pimple like rash on back of arm, what is this and what is a treatment?

Pimple like rash on back of arm, what is this and what is a treatment?

Keratosis pilaris: Is a common skin condition that causes rough patches and small, acne-like bumps, on the arms, thighs, cheeks and buttocks. These bumps do no generally scar unless they are traumatized by excessive scratching. Dark spots that may remain after resolution or treatments usually fade on their own over time. ...Read more

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I have a pimple like rash only on the outter part of my arms it not itchy but it is really bothersome. What is it? I have had it for about a month now

I have a pimple like rash only on the outter part of my arms it not itchy but it is really bothersome. What is it? I have had it for about a month now

Rash: It's very difficult to diagnose skin rashes without a picture, but it could be patches of eczema (which don't always have to itch). If it's symmetric on the upper arms, we think of things like keratosis pilaris, which doesn't itch, but can be cosmetically bothersome. It doesn't sound like an urgent concern, and getting it checked in the next 1-2 weeks should be fine. ...Read more

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I have a pimple rash on my arms neck and some on my back?

I have a pimple rash on my arms neck and some on my back?

Rash needs exam: Rashes are difficult to evaluate without being seen. Could be acne, folliculitis, mollusca contagiosum, many, many things. If it bothers you, see your doctor. ...Read more

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Pimple rash on arms neck and back?

Pimple rash on arms neck and back?

Keratosis pilaris: Your description sounds like a dermatologic condition known as keratosis pilaris. This condition produces rough and pimple-like bumps on the upper outer arms and back. Sometimes the inner thighs and face can also be affected. ...Read more

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Arm pit rash with pimples with white heads?

Arm pit rash with pimples with white heads?

Many possibilites: 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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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

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I have a pimple like rash on both of my arms. I've been told it looks like a pregnancy rash. What could this be?

Several things: I have not heard of a "pregnancy rash" on the arms only. There could be many causes from a contact dermatitis to keratosis pilaris to a photsensitivity. An examination by your dermatologist would clarify. ...Read more

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I have pimple like rash on upper left arm, down to my elbow. It seems to get a bit better with antifungal and hydracortizone creams. Possiblities?

I have pimple like rash on upper left arm, down to my elbow. It seems to get a bit better with antifungal and hydracortizone creams. Possiblities?

Staph infection: At worst, if they are real red pustules, they could be a topical staph infection. If they are skin colored small bumps, and you have a few on the other arm in the same place, it's a genetic condition called "hyperkeratosis pilaris". Creams help temporarily but do not cure or remove it. You may need to have somebody look at it to tell the difference. ...Read more

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I have a white pimple like rash that has appeared all over my chest and tops of arms it is not itchy or sore?

I have a white pimple like rash that has appeared all over my chest and tops of arms it is not itchy or sore?

Folliculitis: It is hard to say without seeing it but my guess is folliculitis. Itching can be present with folliculitis. Steroid creams help and good hygiene is important. ...Read more

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2 red spots, 1 on each fore arm, not itchy, painless, clears when the skin is pulled/stretched, not pimple like, dry, flat, slightly raised, HIV rash?

2 red spots, 1 on each fore arm, not itchy, painless, clears when the skin is pulled/stretched, not pimple like, dry, flat, slightly raised, HIV rash?

Red Spots: Heat, fungus, parasites, bacteria and virus can cause red blotches to appear on your arm. Rosacea, psoriasis, atopic dermatitis, eczema and shingles can cause large red patches of skin to appear and become itchy and uncomfortable, hives, cellulitis and insect bites can create red splotches of skin that become irritated. See your doctor for a diagnosis. ...Read more

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I have a rash that start off as a small pimple and evolves to look like a burn mark. It's on my legs, waist, arms (severe) and neck. What can this be?

Exanthems (= rashes): Such as yours are often impossible to diagnose with out the MD having the advantage of " laying eyes on it." Photos of good resolution can help but won't supplant good clinical evaluation. There are so many possibilities it wouldn't help anything to try to narrow down with such little information. On the other hand, a good dermatologist usually can nail it in a few minutes in person. ...Read more

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Rash on belly and chest has spread to top thigh and under arm. Spread wide apart and itches. Doesn't look like a pimple and not flakey have had 1 week?

Rash on belly and chest has spread to top thigh and under arm. Spread wide apart and itches. Doesn't look like a pimple and not flakey have had 1 week?

See a doctor.: It is hard to diagnose a rash without seeing it. You should see a doctor who can determine the diagnosis and then prescribe the proper treatment. This could be hives, a contact rash, a bacterial infection or from a virus, among other possibilities. ...Read more

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I have a pimple like rash (not red skin just bumps) under both upper arms, only itches when tshirt brushes up against it and doesn't hurt?

I have a pimple like rash (not red skin just bumps) under both upper arms, only itches when tshirt brushes up against it and doesn't hurt?

Pimple like: Rash - sounds benign. Just observe for now. Do take a picture for documentation. In meantime, cover it with a bandaid to avoid getting irritated by your clothing. ...Read more

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My 18 month old has a pimple like rash around her diaper line and on her arms and legs as well as blisters on the bottom of her feet?

Many possibilities: Have her doctor take a look, as this sounds like a pattern that can accompany a viral or perhaps a bacterial infection. It might need time, or a prescription antibiotic cream/ointment, something else, or nothing. Give the doctor a a call and see what he advises. Hope this is helpful. ...Read more

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I am having white pimple type rashes on my hands as well as extreme swelling. It itches and is spreading up my forearm. Is this bad?

I am having white pimple type rashes on my hands as well as extreme swelling. It itches and is spreading up my forearm. Is this bad?

Allergic Reaction?: Try Benadryl (diphenhydramine) right way. If there is red streak and pain with or without Fevers then there may be a component of Infection. This needs Examination immediately. ...Read more

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Have a dry rash with tiny pimples and a couple lumps under armpit. Is painful to move arm around?

Have a dry rash with tiny pimples and a couple lumps under armpit. Is painful to move arm around?

Warmth, Pain med, I&D: You may have inflammation of a local sweat gland or hair follicle which can be quite painful. Warm compress/ heat pad to the area and acetominophen or ibuprofen for the pain might help. However there may be a collection of "pus" which may require drainage. See your doctor for this treatment. ...Read more

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I have a rash that has small pimples along with it. I can pop the small pimples. It is on my back, chest, neck, face, and arms. What is it.

Need more info.: How old are you? How log has the rash been present? A picture of the rash would help. It could be acne, it couls also be hyperkeratosis follicullaris, a presumed hereditary condition. ...Read more

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I get an itchy rash on my right arm once every 4 weeks. It goes away in 4 or 5 days. The skin is bumpy with small red pimples only in that area. WHY?

I get an itchy rash on my right arm once every 4 weeks. It goes away in 4 or 5 days. The skin is bumpy with small red pimples only in that area. WHY?

ITCHY BUMPS ARM: YOU MUST BE A DETECTIVE.
WHAT DO YOU DO EVERY FOUR WEEKS THAT YOU DO NOT DO AT OTHER TIMES?
HOBBIES?
WORK?
YOU ARE PROBABLY TOUCHING SOMETHING OR DOING SOMETHING THAT YOU DO NOT DO IN THE OTHER THREE WEEKS.
BE A DETECTIVE AND WRITE BACK WHEN YOU FIND OUT WHAT IT IS. . . ...Read more

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What type of rash is this? It's all over my head, face and arms. Red raised bumps. Similar to multiple pimples but red in the middle

What type of rash is this? It's all over my head, face and arms. Red raised bumps. Similar to multiple pimples but red in the middle

Rash: Rash is a VISUAL diagnosis. You cannot make right recommendations on a rash based upon a written description. Please see your MD or a Dermatologist ...Read more

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I had a few bruises on my arm and swam in a river afterwards. 2 days later I have discovered a rash on my arm around the bruises. It's red pimples..

I had a few bruises on my arm and swam in a river afterwards. 2 days later I have discovered a rash on my arm around the bruises. It's red pimples..

Possible infection.: It appears as your bruises might be getting infected. If so, you will need to be treated with antibiotics. Also if you got exposed to either Poison Oak, Poison Ivy, or Poison Sumac while going to or from river, you might get similar rash. Allergies might do the same. ...Read more

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I have had a persistent itchy, burning rash of about 20 or so red pimples on my inner upper arm for over a month. Antihistamines not helping. Help?

I have had a persistent itchy, burning rash of about 20 or so red pimples on my inner upper arm for over a month. Antihistamines not helping. Help?

See dermatologist: A cluster of red pimples that itch and burn on one side of the body sounds like shingles but a month sounds a bit long. Time to get checked out. ...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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What could cause rash/pimples in the armpit?

What could cause rash/pimples in the armpit?

Many things: Folliculitis, contact dermatitis (to clothes or antiperspirant); bacterial, viral or fungal infection, hyperhidrosis (sweating too much), on and on. If it is bothersome, see your doctor for a definitive diagnosis. ...Read more

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I have a rash its beat red with things that look like pimples there's puss like substance with a bad odor under my entire right armpit what could it be?

I have a rash its beat red with things that look like pimples there's puss like substance with a bad odor under my entire right armpit what could it be?

Infection: It can be an infection of the sweat glands, it is time to see your doctor about it and they can help and see if you need to see a dermatologist if this is a recurring problem. ...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


Dr. J. Lawrence Dohan
2,497 Doctors shared insights

Pimples (Definition)

A pimple is a small inflamed spot on the skin. Also known as zit, ...Read more