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Doctor insights on: Causes Of Small Red Itchy Bumps On The Left Arm

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I just got red, itchy bumps on my upper left arm out of nowhere. What could have caused this?

I just got red, itchy bumps on my upper left arm out of nowhere. What could have caused this?

?Hives: Sounds like you may have hives which would be an allergic reaction. You can try taking some Benadryl (diphenhydramine) and see if that helps. If the rash persists, spreads, or you develop fever, make sure you get in to see you physician. Good Luck! ...Read more

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Dr. Doanh Nguyen
607 doctors shared insights

Itchy Rash (Definition)

Most itchy rashes are called eczema or dermatitis. Both are due to ...Read more


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I have a few clusters of 2-3 small red itchy bumps on my forearms. The ones near my arm fold spread to my upper arm when they get blistery. Help?

I have a few clusters of 2-3 small red itchy bumps on my forearms. The ones near my arm fold spread to my upper arm when they get blistery. Help?

Poison ivy?: Cluster of skin lesions could be from poison ivy to herpes simplex, and many different conditions. Poison ivy type of contact allergy should have some history of exposure. If it stays on one area for a long time without spreading, herpes simplex maybe considered. ...Read more

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What causes red itchy bumps on the arms and elbows?

What causes red itchy bumps on the arms and elbows?

Rash on Arms: Dermatitis herpetiformis is an extremely itchy rash made of bumps and blisters. The rash is chronic, which means it continues over a long period of time. This rash occurs on the arms and elbows. Other causes include eczema, allergies, contact dermatitis, psoriasis and others. See your dermatologist for a diagnosis and treatment. ...Read more

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I have red itchy bumps on my arms and neck recently changed bed covers what are they from? Also have a cluster of small bumps on knee theyre very red

I have red itchy bumps on my arms and neck recently changed bed covers what are they from?
Also have a cluster of small bumps on knee theyre very red

Hard to say: but one would suspect something from the new bedspread might be the cause- although it may have nothing to do with it at all. If you have put away the new bedspread and continue to have the skin rash more than a week after, consider seeing a dermatologist. In the meanwhile, try topical hydrocortisone cream. ...Read more

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I have this rash of small red itchy bumps spread out. For 5 days . On upper back, arms, inner thigh, sides. 39wks preg. What should I do? What is it

I have this rash of small red itchy bumps spread out. For 5 days . On upper back, arms, inner thigh, sides. 39wks preg. What should I do? What is it

Take a medication: The rash that you describe can be due to many causes. At this point you can take an otc class b antihistamine such as Cetirizine 10mg and apply an anti-itch cream such as sarna with pramoxime (not benadryl). If no better or worsening, see you physician. ...Read more

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There are little red itchy bumps on my arms and left leg that look like insect bites but appear out of no where and burn under warm water. Any ideas?

There are little red itchy bumps on my arms and left leg that look like insect bites but appear out of no where and burn under warm water. Any ideas?

Possible: Some people can get a "heat rash" that worsens when the skin is hot and usually gets better when cooled. However, to really be certain you should have this problem examined. ...Read more

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My daughter has red itchy bumps on her arms and feet. What could be the cause? She was diagnosed with a staph infection but the bumps persist. Bed bugs were mentioned but she is the only person being bitten. Could this be an allergic reaction to something

My daughter has red itchy bumps on her arms and feet. What could be the cause? She was diagnosed with a staph infection but the bumps persist. Bed bugs were mentioned but she is the only person being bitten. Could this be an allergic reaction to something

This : This is tough to answer without a picture. There are several possibilities including bites (fleas or other), eczema or allergic contact dermatitis, lichen planus, folliculitis (staph infection), and others. I doubt bed bugs given the location. I would recommend you try a moisturizer such as cerave cream twice daily and if not better after a few days consider a trip to the dermatologist for diagnosis and treatment options. Bites are common in kids so that is certainly a possibility. If they are bites, avoidance plus a steroid gel might be beneficial. I hope that helps. ...Read more

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What causes an itchy rash that is a red patch with little bumps in it and is located on the inside of my upper arm near my arm pit.?

What causes an itchy rash that is a red patch with little bumps in it and is located on the inside of my upper arm near my arm pit.?

Not sure - eczema?: This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. ...Read more

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I been getting red itchy bumps in upper thigh, back, and arms and want to know what's the cause of it?

I been getting red itchy bumps in upper thigh, back, and arms and want to know what's the cause of it?

Fungal dermatosus: A of dermatological conditions that can cause non specific papules that itch in the sweat gland distribution of the axilla, upper back and groin. The most common dermatoses seen in moist skin clad regions of the body are fungal. Excessive sweat alone can cause the formation of itchy papules, pustules and abscesses called hydradenitis. Try a fungal powder, Benadryl cream and 1% hydrocortison ...Read more