is this the first time do you get such lesions?
visit your dentist
and get it checked clinicaly.
final diagnosis can be made only by biopsy report.do you have the habit of tobacco/pan chewing?usually such problams arise in case of oral submucus fibrosis
difficulty in opening mouth,swallowing food,blanching of oral mucosa
are the associated symptoms.
discotinue the habit and corticosteroid drug therapy are the line of treatment in such cases.
if this is a case of aphthous ulcers
,plenty of vitamin-b complex supplements has to be taken.tab.flanzen and tab.wysalone are the other drug of choice in such cases.