I have developed blisters on my lips that would come and go. Now they have turned into bruises. I m talking over 6 years of pain, itching and burning. My doctor says it s a vitamin b shortage. Doesn t matter how many supplement s I take never gets any better.
Hi, thank you for asking Chat Doctor. With this presentation, I think the blisters are caused by a virus (Herpes labials). In the course of an infection, the body produces antibodies to fight these viruses.  Some viruses are destroyed in the process while some become inactive and hide in nerve ganglia. When conditions are favorable (especially when the immune system is depressed), the viruses become reactivated producing blisters. Treatment may be topical (acyclovir cream, anesthetic cream or an antiseptic) or oral (acyclovir tablets)I hope that helps. I wish you good health