Inflammatory breast cancer or IBC, often goes undetected, even by mammogram

Because symptoms differ from typical breast cancer, it is harder to diagnose, according to the American Cancer Society. IBC, affects about 4,000 Americans a year and, compared to other more common breast cancers, strikes at younger ages, according to the National Cancer Institute.

Its symptoms are unique: an inverted nipple; or skin can be red and hot to the touch, or have ridges or appear pitted like orange peel because of the build up of fluid in the breast. Often there is no lump, so the cancer can be missed by a mammogram. A doctor may suspect a infection like mastitis and waste precious time prescribing antibiotics as the cancer spreads. Read more on: Today Health