<s>[INST] Hello, my name is Meagan and I m not sure if this site is real legit or not. This is my first time on here and I was wondering if you could help me figure out whats going on with my hand. I have this very painful, swollen and weird lump on my knuckle. my middle finger and ring finger can barely move without my whole hand hurting. This has been going on about three days now and it is getting worse and more painful. So i was wondering if you knew what this might be? Please and thank you! [/INST] Hi Meagan, Thanks for your query. This site is indeed legit and meant to serve all your health queries. Now coming to your question, you could be suffering from Webspace infection. You need to take analgesic, antibiotics (penicillin group) and hot fomentation. Please check your blood for fasting sugar level and total WBC count. If your condition improves by this, then please continue the treatment for 7 days. In case, if the swelling persists, then you would require an incision and Chat Doctor.  Use arm sling while sitting/standing for the effected arm, and do try to avoid free hanging of the effected limb. Take care and wishing you a rapid recovery </s>