It may be a form of a sclerosis
Look up lichen sclerosis
I have a small size flat white blister that is very painful on my Labia and hurts every time something rubs against it. It is only one and my lip down there has been swollen on that side, what do you think it is?
Hi, without actually having full details about it or seeing what it looks like it is hard to say what it could be.
Can you follow up as to what happened with your white patches?