What are the treatments for mouth ulcers?

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Last updated: August 5, 2025View editorial policy

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Treatment of Mouth Ulcers

The management of mouth ulcers should follow a stepwise approach starting with white soft paraffin ointment applied every 2-4 hours, warm saline mouthwashes 4-6 times daily, and topical pain management with benzydamine hydrochloride rinse before meals. 1

Initial Treatment and Wound Care

  • Apply white soft paraffin ointment to affected areas every 2-4 hours to promote healing and reduce discomfort 1
  • Use warm saline mouthwashes 4-6 times daily or clean gently with an oral sponge 1
  • Consider mucoprotectant mouthwash three times daily 1
  • Avoid alcohol-based mouth rinses as they can cause further irritation 1

Pain Management

First-line options:

  • Oral acetaminophen for systemic pain relief 1
  • Anti-inflammatory oral rinse/spray containing benzydamine hydrochloride every 3 hours, particularly before eating 1

For moderate to severe pain:

  • Topical 2.5% lidocaine ointment (use cautiously) 1
  • Viscous lidocaine 2%, 15 mL per application for moderate pain 1
    • Note: Evidence suggests that while topical 1% lidocaine cream significantly reduces pain intensity compared to placebo 2, viscous lidocaine may not improve oral intake in children despite providing some pain relief 3
  • For severe pain, follow WHO pain management ladder with consideration of transdermal or intranasal routes when oral medications are difficult 1

Infection Prevention and Treatment

  • Use antiseptic oral rinse twice daily with either:
    • 1.5% hydrogen peroxide mouthwash, or
    • 0.2% chlorhexidine digluconate mouthwash (can be diluted by up to 50% to reduce soreness) 1
  • Take oral swabs if bacterial or candidal secondary infection is suspected 1
  • For confirmed candidal infection, treat with nystatin oral suspension or miconazole oral gel 1
  • For HIV-infected patients with candidal angular cheilitis, use topical antifungal treatment with clotrimazole troches (10 mg) dissolved 5 times daily or miconazole mucoadhesive tablets 1

Dietary and Lifestyle Modifications

  • Maintain adequate hydration to keep the mouth moist 1
  • Modify diet to include soft, moist, non-irritating foods 1
  • Avoid acidic, spicy, salty, rough/coarse food that may cause further irritation 1
  • Stay hydrated by drinking ample fluids 1

Monitoring and Follow-up

  • Inspect oral mucosa daily for signs of healing or worsening 1
  • Assess pain at least once daily using an age-appropriate pain scale 1
  • Monitor oral intake to prevent dehydration 1
  • Follow up within 3-5 days if symptoms are not improving 1
  • For persistent symptomatic cases, follow-up every 3-6 months is recommended 1

Special Considerations

  • For recurrent aphthous stomatitis (RAS), systematic review evidence suggests that no single systemic intervention has been conclusively proven effective, highlighting the need to focus on topical treatments first 4
  • Alternative treatments like Alchemilla vulgaris (Lady's Mantle) in glycerine have shown promising results in an open-label study, with 75% of patients experiencing complete healing within 3 days 5
  • For isolated, persistent ulcerations that don't heal, consider biopsy to exclude squamous cell carcinoma or other malignancies 6

Diagnostic Approach for Persistent Ulcers

  • Examine for color changes, surface changes, swelling, and specific patterns 1
  • Check for dental factors that might cause trauma 1
  • Assess for signs of systemic disease 1
  • For persistent ulcers, consider biopsy to rule out malignancy 6
  • Collect appropriate swabs for bacterial, candidal, or viral culture from affected areas 1

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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