What causes white painfull blisters on ur lips?

Question

omg i have blisters (white) an they are so painfull an i dont know how i got them i just notest them today an i tryed numbing it an then it started to hert even more i dont know how i got them

there not from the sun or anything like that

Answer 1

They are cold sores                                                                                                  

Answer 2

Herpes simplex virus, not the one that is spread through s*x, but it is spread through kissing, sharing drinks, straws, etc.  Go buy some abreva, and when you feel like you are getting one again (it will be hot and tingle) put the abreva on ASAP and repeat 4-6 times a day.  You only need a small amount.  

Answer 3

uh oh

do u have a fever also? or any other sickness? those are usually called fever blsters and they appear on the inside of ur moouth and ur lips.. i had it for like two weeks.. everywhere in my mouth.. betwene my teeth in my throat undder my tongue all over my lips on the inside and outside.. i had to get medicated for it.. it also comes with strep throat..

ps i couldnt eat for those two weeks because i could barely open my mouth they got so bad nd lost 10 pounds :| but i was so hungry :( it was bad