If the physician is certain the inflammation is not caused by an infectious organism, the patient can Rinse and expectorate after meals with dexamethasone elixir 0.5 mg/5 mL (1 tsp) Apply a paste of 0.1% triamcinolone in an oral emollient Wipe amlexanox over the ulcerated area with the tip of a finger Chemical or physical cautery can ease the pain of localized lesions.