If you've got any of the following symptoms call your doctor:
Any unusual changes in your breast including redness, rapid increase in size of one breast, persistent itching of breast or nipple, thickening of breast tissue, stabbing pain, soreness, swelling under the arm, dimpling or ridging (for example, when you take your bra off, the bra marks stay – for a while), flattening or retracting of the nipple, or a texture that looks or feels like an orange (called peau d’orange).If you're nursing a baby, don't just assume that it's a clogged duct or mastitis that will clear up on its own. I'm guilty of having done that with DS. Fortunately, it was just a clogged duct in that case but I still ought to have called my doctor. Especially be concerned if your baby refuses to nurse from that side.
WhyMommy over at "Toddler Planet" was diagnosed with Inflammatory Breast Cancer back in June. She has an almost 3 year old and a 6 month old and is now undergoing chemotherapy- please keep her & her family in your prayers!
(HT: MC Milker over at "The Not Quite Crunchy Parent")