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Doctor insights on: Pimple Like Rash Under Armpit

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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.

Axilla (Definition)

Area of human body directly under the joint where the shoulder connects to the arm. It contains axillary vessels, brachial nerve plexus, lymph nodes & vessels, axillary ...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.

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Red Rash in armpits with painful swollen Lymph nodes but its not itchy, pimple like blisters, a few boils. Cream not working.

Red Rash in armpits with painful swollen Lymph nodes but its not itchy, pimple like blisters, a few boils. Cream not working.

See your doctor ASAP: It is difficult to tell without looking at your rash and examine your armpits. You may need surgical drainage if you have boils or abscess, and antibiotic if you have cellulitis. Please go to see your doctor or urgent care ASAP for definitive diagnosis and specific treatment.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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. . .

Dr. John Chiu
2,647 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