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Columbus, GA
A 21-year-old female asked:

I have a large red bump on the back of my arm where the muscle is. it looks like a pimple and is very painful. what is it?

1 doctor answer1 doctor weighed in
Dr. Pouya Shafipour
Family Medicine 25 years experience
Abscess? infected: Hair follicle? These are some of the common things that it could be. I suggest putting warm compresses on it to see if it might get soft and open up/drain. If it gets worse, see a doctor for evaluation, possible incision/drainage or antibiotics.
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Last updated Sep 29, 2013

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