A lump, bump, or other lesion on your hard palate may be a cold sore, canker sore, or a type of cyst. A sore that’s bleeding or will not go away may indicate a more serious condition, such as oral ...
A bump or sore on the roof of the mouth can result from a burn or injury. It may also be a canker sore or cyst, or it may be a sign of an infection, such as candidiasis or hand, foot, and mouth ...