 [ Symptoms ] my mom suffers wdiverticulitis & is afraid to eat anything lest she aggravate the symptoms would ensure be beneficial  she is 86 years old and under a dr is care however because she fears making the symptoms worse she eats very little and has become very weak she is down about 30 lbs from what she was just a few months ago down to about 110 lbs  [ Disease ] in all probability what you are experiencing is simply irritation and dryness of the nipple which can be fixed by applying moisturizer that said the full answer is a bit more complicated the fact you are having pain throughout the whole breast presents something of a red flag i would suggest you see your primary care provider to have this more fully evaluated obviously you do not want to take any chances that this is something more serious that just dry skin even if you have had normal mammograms in the past tenderness in the breast is something to get evaluated with luck it will turn out to be something simple but you will get some peace of mind by having your health care provider evaluate this good luck to you