Re: Cold Sore? or?
Your best bet is to see a dermatologist or a physician WHILE you have the sore. I suspect they are cold sores, and yes they can get big (some people get small ones, I knew a girl once who got large ones like you). It may be that you need a prescription strength cream or drug to help them. Cold sores are actually a member of the herpes virus and what happens is when you get a virus, your immune system is weaken from fighting the cold virus, which allows the virus causing the sores to flare up. Very common, but apparently people get them to varying degrees.