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Doctor insights on: Itchy Red Bump Disease Behind Knees On Back And Arms And Legs

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Dr. John Chiu
Board Certified, Allergy and Immunology
52 years in practice
21M people helped
1

1
For a few weeks now, I've had itchy areas on my arms and legs. They start out as tiny little spots. Then I started scratching and they become red, itchy rashes. I have 2 places on my left arm, 1 on my right and behind both of my legs (knee area). What

Dr. John Chiu
Board Certified, Allergy and Immunology
52 years in practice
21M people helped
For a few weeks now, I've had itchy areas on my arms and legs.  They start out as tiny little spots.  Then I started scratching and they become red, itchy rashes.  I have 2 places on my left arm, 1 on my right and behind both of my legs (knee area).  What

Dry skin?: First try applying a moisturizer all over your body within 3 minutes after bathing and see if this helps. For the rash, topical hydrocortisone for a few days may be helpful. However if this is a persistent or worsening problem, I would recommend a dermatology consult. ...Read more

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Dr. Steven Seres
Board Certified
16 years in practice
464K people helped
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Dr. Steven Seres
Board Certified
16 years in practice
464K people helped
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Dr. Vicki Levine
Board Certified, Dermatology
36 years in practice
2M people helped
2

2
My sister has a red, itchy rash developing on her arms and legs. It started on her feet and has now spread to hands, knees, elbows. ?

Dr. Vicki Levine
Board Certified, Dermatology
36 years in practice
2M people helped
My sister has a red, itchy rash developing on her arms and legs. It started on her feet and has now spread to hands, knees, elbows.  ?

Cannot say: Your sister could have eczema and allergic eruption or psoriasis.She needs to see a dermatologist for a diagnosis and treatment plan. Sometimes a skin biopsy is necessary. ...Read more

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Dr. Steven Seres
Board Certified
16 years in practice
464K people helped
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Dr. Steven Seres
Board Certified
16 years in practice
464K people helped
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Dr. Joseph Eastern
Board Certified, Dermatology
39 years in practice
12M people helped
3

3
My daughter has non itchy painless red bumps all over her back arms and legs only what could they be?

Dr. Joseph Eastern
Board Certified, Dermatology
39 years in practice
12M people helped
My daughter has non itchy painless red bumps all over her back arms and legs only what could they be?

Many possibilities: You didn't mention your daughter's age or how big the bumps are, but the most likely possibility is probably bug bites, which aren't necessarily itchy. Since they are widely distributed it's most likely a flying insect, e.g. Mosquitos. It could also be a viral illness or allergic reaction. If symptoms or a fever develop, you should see your doctor or a dermatologist and get a precise diagnosis. ...Read more

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Dr. Reid Blackwelder
Board Certified, Family Medicine
32 years in practice
6M people helped
4

4
I have a bright red (and itchy!) rash on the back of both my legs, between my butt and knee. It looks like small bug bite like bumps. Not spreading.?

Dr. Reid Blackwelder
Board Certified, Family Medicine
32 years in practice
6M people helped
I have a bright red (and itchy!) rash on the back of both my legs, between my butt and knee. It looks like small bug bite like bumps. Not spreading.?

Many causes: Rashes are challenging even when the doctor can see them, so even harder in this forum. Small red bumps on both legs make me think of reactions to clothes, or something in contact with that area on both sides. Bites can do it. It could be heat rash, a reaction of the skin to warmth and occlusion from pressure. Some drug reactions can do that as can conditions like eczema and psoriasis. ...Read more

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Dr. Steven Seres
Board Certified
16 years in practice
464K people helped
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Dr. Reid Blackwelder
Board Certified, Family Medicine
32 years in practice
6M people helped
5

5
Many bright red and itchy rash on the back of both my legs, between butt and knee. It looks like small bug bite like bumps smeared in a line. Nospread?

Dr. Reid Blackwelder
Board Certified, Family Medicine
32 years in practice
6M people helped
Many bright red and itchy rash on the back of both my legs, between butt and knee. It looks like small bug bite like bumps smeared in a line. Nospread?

Many causes: Rashes are challenging even when the doctor can see them, so even harder in this forum. Small red bumps on both legs make me think of reactions to clothes, or something in contact with that area on both sides. Bites can do it. It could be heat rash, a reaction of the skin to warmth and occlusion from pressure. Some drug reactions can do that as can conditions like eczema and psoriasis. ...Read more

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Dr. Katharine Cox
Board Certified, Pediatric Emergency Medicine
40 years in practice
3M people helped
6

6
Hi! I have -extremely- itchy bumps on my legs. Not quite blisters, just circles of red. On the back of my thigh above the knee armpit.What is this?ty

Dr. Katharine Cox
Board Certified, Pediatric Emergency Medicine
40 years in practice
3M people helped
Hi! I have -extremely- itchy bumps on my legs. Not quite blisters,  just circles of red. On the back of my thigh above the knee armpit.What is this?ty

Rash: Difficult to say without seeing them but the fact they are so itchy makes me think of hives or bites. Send a picture if you can. Keep them clean and use an antihistamine. All the best. ...Read more

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Dr. Tracy Sinha
Board Certified, Allergy and Immunology
48 years in practice
716K people helped
7
Dr. Payam Rafat
Board Certified, Podiatry
17 years in practice
14M people helped
8

8
Non itchy bumps all over my checks arms and legs white stuff comes out of it and after stuff comes out they turn very red?

Dr. Payam Rafat
Board Certified, Podiatry
17 years in practice
14M people helped

Have it evaluated: There are many types and causes of skin rashes. 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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Dr. Lori Semel
Board Certified, Pediatrics
30 years in practice
7M people helped
9

9
Itchy Red bumps, not blisters on arms and legs after weed whacking, what is it?

Dr. Lori Semel
Board Certified, Pediatrics
30 years in practice
7M people helped
Itchy Red bumps, not blisters on arms and legs after weed whacking, what is it?

Bites or bumps: could either be insect bites or a local skin reaction to the weeds. Either way and antihistamine will relieve the symptoms. ...Read more

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Dr. John Chiu
Board Certified, Allergy and Immunology
52 years in practice
21M people helped
10

10
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

Dr. John Chiu
Board Certified, Allergy and Immunology
52 years in practice
21M people helped
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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Dr. Steven Seres
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