What are the chances i have aphthous ulcers vsherpes?

Could be both.: Herpes simplex of the mouth is a common cause of painful, recurrent ulcerations, caused by the virus, that stays indolent in the mouths/lips, and then when triggered by a 'cold' or sun or certain foods, etc, becomes an active lesion. Aphthous ulcer is a more general term, which is associated with many different causes, but not one cause.

History: Need a history that informs the dentist of frequency, duration and location. May need a culture or biopsy.