I have something like that on the inside of my top lip -- it's greyish black and has a little pimple that seems like pus inside -- but there is a little lumpy feeling under it -- last time (over 7 months ago) I saw my dermatologist - she said it was a common thing -- but the other day it seemed like another pimple came -- and I tried to pop it and it kind of went away -- but the original one is still there. Do I need to worry and go back to the dermatologist?View Thread