Doris gave a great basic description. I've had A B sized breasts since puberty. At that time, they itched terribly and the nipple/areola area became darker in color and chronically enlarged and puffed-up (just like those of a pubescent girl). Naturally, I was taken to my Pediatrician (who calmed my parents , but not me). I was privately thrilled but publicly humiliated (I was known as "Captain Nipples" all-through Middle School).