My right distal phalanges hurts.. I feel the bumps of the bones in my right pointed finger bones (distal phalanges) and it hurts every time I open the door or pulling something.. and Also left ring finger and middle is starting to hurt too.. why is this happening to me?? What do I have to do? Some home remedy?

Summarized question: What causes bump like feeling on the right finger bones and pain in distal phalanges?