### Patient: Doctor, I've been experiencing leg pain and now I'm also experiencing hand or finger pain. The skin on my arm looks infected and I also have a fever. Do you know what could be causing all of this?
### Doctor: It sounds like you may have septic arthritis. This is an infection in a joint that causes pain, swelling, and stiffness. Fever is also a common symptom. We need to do some tests to confirm the diagnosis and start you on antibiotics as soon as possible.