Clinical term
mouth ulcer
A painful break in the lining of the mouth. Most heal within two weeks; any ulcer lasting longer than three weeks must be examined.
Also called: aphthous ulcer, canker sore
Reviewed by Dr. Amit Sharma, Oral & Maxillofacial Surgeon · Last reviewed 3 September 2026
Read the full guideVitamin Deficiency and Mouth Ulcers
Where we discuss mouth ulcer
- Recurrent Aphthous Ulcers: Causes and Home Care Options
- Major Versus Minor Canker Sores: Symptoms and Treatment
- Mouth Ulcers Caused by Denture Irritation and Rubbing
- Cold Sores Versus Canker Sores: Key Differences Explained
- Photobiomodulation Laser Therapy for Painful Canker Sores
- Vitamin Deficiency and Mouth Ulcers
- Recurrent Aphthous Ulcers
- Mouth Ulcers: Causes, Treatment and When to Worry
Related clinical terms
Concerned about this in your own mouth?
Our specialists examine, explain and treat this at our NABH-accredited dental hospital in Malviya Nagar, Jaipur.