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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes A Huge Zit Looking Thing On My Knee?

Hi, A few months ago I had this huge zit looking thing on my knee with a big white thing on top. It hurt when I touched it, but I decided it was harmless and popped it. It was hard to pop, but after I did it continued to hurt for a couple hours until it just vanished. I thought nothing of it and now I have another one near the same place on my knee. What is it and what should I do?
Wed, 3 Dec 2014
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Dermatologist,  's  Response
Hello,
Thanks for the query,

You might have developed sebaceous cyst.

It is a collection of dead material under the skin.

When you press this material comes out as black debris.

Dont worry its not a dangerous condition.

Treatment is mainly surgical.

It can be removed with the wall of the cyst, through a small incision.

Please meet a dermatologist for exact diagnosis.

Let me know if you have any other doubt.

you can ask a direct question to me on this forum, following the below link.
http://www.healthcaremagic.com/doctors/dr-rahul-kumar/64818

Wishing you good health,
Thank you
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What Causes A Huge Zit Looking Thing On My Knee?

Hello, Thanks for the query, You might have developed sebaceous cyst. It is a collection of dead material under the skin. When you press this material comes out as black debris. Dont worry its not a dangerous condition. Treatment is mainly surgical. It can be removed with the wall of the cyst, through a small incision. Please meet a dermatologist for exact diagnosis. Let me know if you have any other doubt. you can ask a direct question to me on this forum, following the below link. http://www.healthcaremagic.com/doctors/dr-rahul-kumar/64818 Wishing you good health, Thank you