I have a severe pain in thumb finger since 2 weeks no casualty, I feel pain when I press the nail and while folding the finger and there is mild swelling as well. I met physician but no infection was traced. I met ortho and conducted blood test and suggested to use vitamin b12 tablets (Benstrong). But still I feel the pain from inside like burning sensation and inflammation kind of pain. Could you please suggest what kind of medication is required.