Has anybody had problems with blood blisters on the roof of your mouth? I'm wondering if it is a side effect of one of my asthma drugs. I'm on Advair 250 1 puff 2x day, Spiriva 1 capsule a day, Asmanex 2 puffs at bed time, abluterol as needed. I never used to get them. Or at least only when I ate pizza and got pizza burn. :) They are infrequent and come on without warning. They don't hurt , just feel like I'm coking on popcorn hull.