I have a knot under my armpit that I think is a boil. It feels like a boil and the drawing medicine for boils has been bringing it down slowly. its hard under the skin and red , the skin has been pealing little by little and its started to itch a lot and I have a burning sort of skin ripping feeling when I move my arm. It was the size of silver dollar about two weeks ago and now its gone down to the size of maybe a quarter. Just wondering is the skin pealing and itching and burning feeling normal for a boil under the armpit and can it go away with out having to drain it? Also will a boil feel hard under the skin and will it be red in color under the armpit?