This isn't an answer but I'm having the same problem! Not much pain thankfully, but I feel these bumps or balls in my right breast and when I squeeze them they Crunch! Then a weird sensation and mild little sharp pains follow...not to mention both breasts itch from the inside terribly and my right nipple, coming from directly inside!!..there is no sign of rash or any marks to explain the itch ...it is very bizarre and incredibly alarming..my doctor couldn't help...I'm very worried.