regardless of your age clothes rubbing on your nipples can cause irritation. my wife was having the same problem. i suggested clear double sided tape. as crazy as it sounds it worked.
62 yrs. old. having tenderness around my nipple when clothes rub against it; some pain in whole breast. not pregnant. post-menopausal so no periods or pregnancy. it this something to be concerned about? been going on for about 2 months. only happening in one breast.