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Clear liquid-filled itchy bumps on knees and elbows. What is it?

I have itchy bumps that only appear on my knees and elbows periodically. they are filled with clear liquid and are extremely itchy. each bump is relatively small but together they can grow to be about the size of a quarter and possibly bigger. i itch them until i start to bleed because only then will the itching stop. because of this, my elbows and knees are filled with scars. my doctor prescribed a steroid anti-itch cream but i would really like to know what it is and how to prevent it.
Asked On : Tue, 23 Oct 2012
Answers:  1 Views:  904
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Dermatologist 's  Response
Jul 2012
Hi there.

I hear you & thank you for writing into HCM!

However, deramtology is a visual line & would greatly appreciate a clear digital photograph or multiple of the same uploaded onto this website. You may do this using the 'upload data' icon to the right of your screen!

Should you desire discretion, feel free to use our premier 'ask-a-specialist' feature.

This rash you long exactly has it been on for?
Are you allergic to any particular food products eg wheat products?
Is there anyone else with a similar itch? Does it get worse at nights?

Please do ingest an antihistamine in the interim..fexofenadine 180mg is a good bet.

Do visit a dermatologist nearest you. This looks like a skin biopsy is in order to clinch the diagnosis preferably one employing a lab with immunoflorescent techniques

Good LUck& God Bless!

Dr Praveen Rodrigues MD
Dermatologist, Cosmetologist
Bangalore, India
Answered: Tue, 23 Oct 2012
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