Several causes.: Might be hormonal more than anything else. For something bad ( cancer) to happen and affect both nipples at the same time would be extremely unlikely. But an elevated prolactin can do this ( many medicines can do this, ie. Meclopropamide), and a low thyroid will also elevate prolactin levels. Finally, if you are using a new detergent for your bra, this might causes some reaction.
Answered 7/11/2018
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A doctor has provided 1 answer
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