Recurrent Mouth Ulcers (aphthous stomatitis)
Also known as: mouth ulcers, canker sores, aphthous ulcers, aphthous stomatitis
Recurrent mouth ulcers are small painful sores inside the mouth that heal in 1–2 weeks. Chinese medicine treats them as Kǒu Chuāng with Heart-Spleen Heat, Stomach Heat, or Yin deficiency with Empty Heat patterns. Persistent or unusual ulcers need medical review.
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Lifestyle & Diet
- •Most ulcers heal in 1–2 weeks; numbing gels and salt-water rinses ease the pain.
- •Avoid spicy, acidic and sharp foods during flares.
- •Ask the GP to check B12, folate, iron and coeliac disease if ulcers keep returning.
- •Try SLS-free toothpaste — it reduces recurrences for some people.
Cautions & Contraindications
- •Any ulcer persisting beyond 3 weeks needs medical or dental review before continued treatment.[,]
- •Never use Mu Tong (Aristolochia risk); Dan Zhu Ye is the safe substitute in Dao Chi San.[]
When to reassess or seek care again
Track flare frequency and triggers over 2–3 months. Confirm blood tests for recurrent cases; refer any ulcer persisting beyond 3 weeks.
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Sources & Further Reading
Clinical guidance, red flags and safety notes on this page draw on the following current sources alongside the classical references above.
- Healthdirect Australia · 2024
- NICE · 2023
- Better Health Channel (Victoria) · 2024
- AHPRA / Chinese Medicine Board of Australia · 2024
Educational reference for licensed practitioners. Not a substitute for individual clinical assessment. Refer to conventional care for any red-flag or undiagnosed presentation.