@55Jlz yes I remember going through that, for me it was after radiation therapy and I noticed probably starting about 6 months post, I believe it was the radiation that caused it. the boob was painful in general, unfortunately at 5yrs post initial diagnosis I had a single mastectomy post chemo from a recurrence at 4yrs. I didnt realise how sore that boob was until it was gone...sheesh. The pain was purely radiation, and the tightness and hardness of the boob from that. So for me the pain was more than just nerve pain that subsides over time. x Melinda