I have small white bumps on the underside (inside) of my upper lip. They look like small blister bumps. They are more concentrated on the lips by the sides of my mouth rather than on the top. I think I have had them for a while, but just discovered them in the last month or so because they started hurting when I eat or drink, and as i was trying to figure out why my lip was hurting, I discovered them. I have tried putting a few OTC ointments on my lip (Blistex, Vaseline) and also using coconut oil to moisturize the area, but nothing helps. They are annoying and sometimes really sore.