assuming your mammograms have always been clear and your nipple isn't leaking any fluid this sensitivity may simply be due to dry skin. if you haven't already tried applying moisturizer to the nipple i'd suggest you do that. you also may try padding the nipple inside your bra with a piece of soft gauze to see if that helps. if the sensitivity persists or if the nipple gets red or crusty looking i'd suggest you see your primary health care provider. it is possible for cancers to arise in the nipple (this is called paget's disease of the nipple ) though it's not very common. hope this helps!
i am 60 years old. on my left breast the nipple is sensitive when something rubs against it. what can i do?