this might sound silly to you but this happens to my belly button pretty frequently and the best thing i've found for it is called boudreaux's butt paste it's a diaper rash cream that can be found in most grocery stores or walmarts. you just spread it on pretty thickly and wait over night and the pain and redness will have decreased and it'll be on it's way to healing. i repeat usage as needed boudreaux's butt paste is completely harmless so it can be used frequently. it has a pretty sweet scent but it's not unbearable and it certainly beats vinegar.
skin that is raw and smells under the breast and in the folds of my skin. it burns and red and stays moist. i bath in vinegar and use alcohol to keep uit dry. i also use powder containing zinc or cornstarch. it itches and burns i have used prescription creams but nothing helps. i am overweight and it it very hard to wear a bra with the redness is very painful at times