A few days ago, I noticed a realtively small area (about the size of a dime) just to the right of my left nipple that was itchy. Over the past few days, it has become slightly larger (about the size of a quarter), is unresponsive to cortizone and anti fungal creams, feels slightly welted, and is pale pinkish-purple in color. There is no pain in my breast and itching is localized to the area in question. I am small-breasted, however, when I lean over, it is easy to see that my left breast appears considerable larger than the right. Is there any cause for concern?