A member asked:

My knee hurts and it has a pimple and it is kind of puffed up a little, why?

2 doctors weighed in across 2 answers

Knee Infection: With the symptoms you describe one would be concerned about an infection. This could be either a skin infection called cellulitis or an infection extending into the knee joint, called septic arthritis. Both of these are serious, therefore you need to be seen right away, tonight.

Answered 5/31/2018

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Dr. Andrew Germanovich answered

Specializes in Pain Management

Could be a sign of: deep infection. See your doctor for an evaluation. Dangerous signs are fever, increased redness at the site and increased pain.

Answered 2/20/2017

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