Abscess If you notice a painful bump on the roof of your mouth, it could be an abscess—an infection that forms when bacteria ...

Cold sores, also known as fever blisters, can develop after infection ... at the first sign of tingling or sensitivity around your mouth, for example — can decrease the pain and shorten the ...

‘A fever blister is supposed to be on your lips or in your mouth. ‘I’ve never in my life heard of a fever blister growing on someone’s cornea.’ For weeks doctors struggled to get the ...