I had terrible pain from my partial mastectomy, not down to my fingers, but more where the lymph nodes were done and inside where the mass was taken. My surgeon felt it was due to nerve endings trying to mend themselves. He told me to do ice packs and then wear like a sports bra which keeps what's left of my breast from moving around. Don't know if this helps, but it did help me, I'm 2 1/2 months now and my breast pain is all but gone, but still having discomfort where the lymph nodes were taken.