First you need to determine if the problem is from something inside
the breast, an exogenous (external) disease, or an irritation from clothing,
soaps, body lotions, etc.. Any condition that originates from the inside
of the breast, or that may be a disease or rash from an unknown source,
should probably be checked by your personal health care provider. Sometimes,
an irritation may be caused by someone using a different soap in your
laundry, or by your wearing a bra that has a seam where it will irritate
the nipple. This can be aggravated by physical exercise that causes
excessive movement of the nipple against the fabric that covers the
nipples. In that case, a change in apparel may be in order. Do not let
anything like this to continue without medical attention.