Management of Oral Aphthous Ulcers

Initial Management Approach

The American College of Physicians recommends betamethasone sodium phosphate 0.5 mg dissolved in 10 mL of water as a 2-3 minute rinse-and-spit solution four times daily for oral aphthous ulcers 1
For localized lesions on the buccal mucosa or tongue, apply clobetasol 0.05% ointment mixed in 50% Orabase twice weekly directly to dried mucosa 1
Alternatively, fluticasone propionate nasules diluted in 10 mL water twice daily can be used 1
Benzydamine hydrochloride oral rinse should be used every 3 hours, particularly before eating, to reduce pain 2
Viscous lidocaine 2% (15 mL per application) can be applied up to 3-4 times daily for severe pain 2, 3
Gelclair mucoprotectant gel applied three times daily forms a protective barrier over ulcerated surfaces, reducing pain and promoting healing 2
Clean the mouth daily with warm saline mouthwashes to reduce bacterial colonization 2
Use 0.2% chlorhexidine digluconate mouthwash twice daily as an antiseptic rinse 2, 3
Avoid crunchy, spicy, acidic foods and hot beverages during the healing period 3

If candidal infection is suspected, treat immediately with antifungals: Nystatin oral suspension 100,000 units four times daily for 1 week 1, 2
Or miconazole oral gel 5-10 mL held in mouth after food four times daily for 1 week 1, 2

Tacrolimus 0.1% ointment applied twice daily for 4 weeks for recalcitrant lesions 1, 2
Intralesional triamcinolone (total dose 28 mg weekly) in conjunction with topical clobetasol for non-healing ulcers 1, 2

High-dose oral prednisone/prednisolone 30-60 mg or 1 mg/kg for 1 week, followed by dose tapering over the second week 1, 2
This should be reserved for cases where topical therapy has failed and quality of life is significantly impacted 1

Obtain blood work and consider biopsy if ulcers persist beyond 3 weeks despite appropriate treatment 4, 5
Multiple sites with different morphological characteristics are present 4
Patient has systemic symptoms (fever, weight loss, malaise) 4
Full blood count to rule out hematologic disorders like leukemia or anemia 4
Fasting blood glucose to identify diabetes as a predisposing factor for fungal infections 4
HIV antibody and syphilis serology if risk factors present 4

Hyperglycemia is an important predisposing factor for invasive fungal infections presenting as oral ulcers 4
Oral ulcers may be the first manifestation of systemic diseases including Crohn's disease, Behçet's disease, or hematologic malignancies 4, 5
Always perform regular oral examinations to monitor treatment effectiveness and detect secondary infections 3