Oral Blister Management: Home Care and When to Seek Professional Treatment

A large oral blister (vesicle/bulla) may be aphthous ulcer, herpetic lesion, traumatic ulcer, mucous retention cyst, or neoplastic. Most minor lesions heal in 7–14 days; persistent or severe lesions need evaluation.

Immediate Self-Care

• Do not pop/pick — increases infection risk, delays healing.
• Saline rinses: ½ tsp salt/8 oz warm water 4–6×/day.
• Topical analgesics: Benzocaine 20% gel, lidocaine 2% viscous, or OTC oral patches.
• Systemic analgesia: Ibuprofen 400–600 mg q6h or acetaminophen 1 g q6h.
• Protective coatings: Orabase, milk of magnesia dab, sucralfate slurry.
• Diet: Cool, soft, bland; avoid acidic, spicy, salty, crunchy, alcohol, tobacco.
• Hydration: Sip water; straw if painful.

When to See a Dentist/Physician

• Lesion >2 weeks without improvement.
• Severe pain uncontrolled by OTC measures.
• Multiple/recurrent ulcers.
• Fever, dysphagia, weight loss.
• Immunocompromised.
• Suspicious features: indurated, non-healing, unilateral, fixed.

Professional Treatments

• Topical corticosteroids (triamcinolone 0.1% in Orabase, clobetasol).
• Antivirals (acyclovir/valacyclovir) for herpes.
• Laser/cautery for recurrent aphthae.
• Biopsy if neoplasm suspected.