Hello, Thanks for posting your query. If there is no history of injury to the area and there is localized pain and swelling then most likely it is related to a local joint inflammation. You can take ibuprofen thrice daily after meals, you can do iceing and apply a local analgesic on the area for relief. Avoid moving the finger much until the inflammation subsides. This should be alright in 7-10 days if it is a minor inflammation. In case the symptoms are persistent then consulting an orthopedician for prescription medicines will be helpful.