Suggest Treatment For Red, Painful And Itchy Bumps In The Mouth

I have been having outbreaks of little red, painful, itchy bumps around my mouth. All I have been using is vaseline because I get outbreaks every time I use any other lip products. I only got these bumps after I foolishly used lip sticks or chap stick, now I get these little bumps almost every week they last days and then an out break starts again. At times I wake up with my swollen lips. What could this be?