Apthous ulcer,torus: I would need to see the spot but most comonly it is an apthous ulcer like a cold sore which can be painful and recurrent.
Answered 4/15/2014
4.2k views
Lump: If the bump truly fluctuates in size, it may be a cyst or mucocele. Your dentist could examine and advise you and refer you to an oral surgeon if needed.
Answered 8/29/2015
4.2k views
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