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Doctor insights on: Causes Of Tiny Itchy Bumps On One Arm

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I have small itchy bumps on my arm and one is blistering. What can this be?

I have small itchy bumps on my arm and one is blistering. What can this be?

Doctor can evaluate: Rashes are very difficult to describe in words, so an exam by a primary care doctor and/or a dermatologist is helpful, when the rash is present. Sometimes rashes occur from bug bites, fungus/yeast, reactions with chemicals, irritants, plants, allergens, etc... Itching makes it more likely an allergic rash or bug bites. If one cannot go to the doctor, a video consult on HealthTap PRIME may help.

Dr. Doanh Nguyen
637 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.

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I have tiny rough itchy bumps all over my arms help what are they I need your advice every one makes a fun of me and say there contagious are they?

I have tiny rough itchy bumps all over my arms help what are they I need your advice every one makes a fun of me and say there contagious are they?

See dematologist: If these have been present for just a few days, try taking antihistamine to see if it helps. If it has been present for weeks, then you need to see a dermatologist to find out. That they are confined only to your arms suggests that you may have a contact allergy for which topical hydrocortisone may work better.

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I woke up with red small itchy bumps on my lower stomach yesterday and today I have a few on the top abdomen, and even one on my arm. What could it be?

I woke up with red small itchy bumps on my lower stomach yesterday and today I have a few on the top abdomen, and even one on my arm. What could it be?

Itchy bumps: Can be from different causes, you need to have them checked by a doctor to identify them ANS treat them properly.

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What could these small itchy bumps on my arms and legs be?

What could these small itchy bumps on my arms and legs be?

Rash: A rash really needs to be visualized by a doctor for an accurate diagnosis and appropriate treatment. Fyi: a red, raised and intensely itchy rash is often hives but it can also be?

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What are those little tiny white itchy bumps on my arms?

What are those little tiny white itchy bumps on my arms?

Assess: 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.

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What are these small itchy bumps on my shoulders and arms?

Many answers: You need to check with your doctor and dermatologist who would likely want to know how long these bumps have been present, medications being taken, and other associated symptoms, a skin biopsy may also be needed.

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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.

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What could cause itchy bumps like misquito bites on my arms and stomach area?

What could cause itchy bumps like misquito bites on my arms and stomach area?

Reaction: Sounds like you are describing hives. This is likely an allergic reaction to something. Could be another type of bug bite but more likely it is a reaction to something that you ate or something that came in contact with your skin. You should have your doctor take a look and decide how to treat.

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Small itchy bumps from being in the sun on my arms. Occurs every summer. Itch is terrible.

Small itchy bumps from being in the sun on my arms. Occurs every summer. Itch is terrible.

Sun or allergy?: Some people get reactions like this whenever they are in the sun too long. Try to avoid direct sun, wear loose shirts with sleeves. For itching, try Cortizone 10 or similar cream. Also can take oral Benadryl (diphenhydramine) for the itch. Also, could it be your sunscreen? Some people have allergic reactions to sunscreens. Try switching brands. Good luck!

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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!

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What are the itchy bumps on my arms that appear one day, dissapear, than reappear again later on? At first they looked like bug bites, but they're not.

What are the itchy bumps on my arms that appear one day, dissapear, than reappear again later on? At first they looked like bug bites, but they're not.

Hard to tell: From your description it is diificult to tell what you may have going on. A possiblity is Urticaria or hives. Please see your physician as seeing a rash is very important in diagnosis.

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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.

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Very small white itchy bumps on half arm spreading fast around tinea versicolor patch.?

Very small white itchy bumps on half arm spreading fast around tinea versicolor patch.?

Keratosis Pilaris: It sounds like you have a condition called keratosis pilaris. This causes tiny, rough prickly bumps to form on the backs of the arms, the thighs, the buttocks and occasionally on the face. A mild exfoliating skin cream with 12% ammonium lactate used once to twice a day will smooth these areas out nicely. If you have itch, a mild cortisone cream from your doctor can help.

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Itchy bumps on thighs an buttocks arms. No new products used. No one else in house affected. What could it be. Not going away.

Multiple causes: Itchy bumps in that distribution has multiple potential causes including bug bites, scabies, drug reactions, keratosis pilaris and numerous other possibilities. Each is treated differently. Seeing a physician for diagnosis and potential scraping or biopsy is recommended.

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I have small white itchy bumps on my arms shoulders and neck what could it be? They've been there about 3 days and aren't getting any better. I used to cut, and they seem to be worse around the scars on my arm

I have small white itchy bumps on my arms shoulders and neck what could it be? They've been there about 3 days and aren't getting any better. I used to cut, and they seem to be worse around the scars on my arm

Need more info: Hi, Most itchy bumps are red in color. Are they spreading? Are there red streaks or any swelling? Do the bumps look like they have fluid inside or not? Clarify for us and the answers will come.