MedCare360
Call
All Diseases

Mouth Ulcers

Last Updated: July 3, 2026

Key Points

  • Common and usually heal within 1-2 weeks
  • Rarely serious, but can be uncomfortable
  • Avoid irritants to speed healing
  • See a doctor if it lasts over 3 weeks or changes

Overview

Mouth ulcers are small, painful sores that can appear anywhere inside your mouth, including on your gums, tongue, or inner cheeks. They are very common and not contagious. While they can be uncomfortable, they are usually harmless and tend to clear up on their own. Most single ulcers result from minor injuries like biting your cheek, ill-fitting dental work, or irritation from food. Other factors like stress, hormonal changes, or certain vitamin deficiencies can also trigger them. Treatment mainly involves managing pain and avoiding further irritation to allow the ulcer to heal naturally. Pharmacists can recommend over-the-counter remedies, and doctors may prescribe stronger treatments for severe cases.

Signs and Symptoms

  • Painful sore inside the mouth
  • Red, swollen area around the ulcer
  • Difficulty eating or drinking
  • Discomfort when speaking
  • Can appear as a single sore or multiple

Things That Increase the Risk

  • Accidental cheek biting
  • Poorly fitting dentures or braces
  • Rough fillings or sharp teeth
  • Cuts or burns from food or drinks
  • Food intolerance or allergy
  • Damaging gums with a toothbrush
  • Stress, tiredness, or anxiety
  • Hormonal changes (e.g., pregnancy)
  • Certain vitamin deficiencies (iron, B, D, folic acid, zinc)
  • Some medications (NSAIDs, beta blockers)
  • Stopping smoking

Diagnosis

  • Visual examination by GP or dentist
  • Review of medical history
  • Discussion of symptoms and duration
  • Further tests if underlying condition suspected

Treatment & Management

  • Avoid spicy, salty, acidic, or rough foods
  • Use a soft-bristled toothbrush
  • Drink cool drinks through a straw
  • Pharmacist-recommended mouthwashes (antimicrobial, salt)
  • Painkilling gels, sprays, or tablets
  • Corticosteroid lozenges
  • Prescription steroids for severe cases
  • Regular dental check-ups

Prevention

  • Maintain good oral hygiene
  • Avoid foods that irritate your mouth
  • Manage stress and anxiety
  • Ensure a balanced diet
  • Address ill-fitting dental work
  • Use a soft toothbrush
  • Avoid toothpastes with sodium lauryl sulphate

Available Treatments

Explore our range of treatment options for Mouth Ulcers:

Mouth Ulcers Treatment

→
View treatment

Contents

Quick Info

Affects

Anyone, common in all ages

Prevalence

Very common

Diagnosis

Visual examination

Treatment

Self-care, over-the-counter remedies

Medically Reviewed

Dr. Vijay Bhat

Dr. Vijay Bhat

Orthopedic Surgeon · Apollo Hospitals, Chennai

Reviewed on July 3, 2026

Need Professional Help?

Consult with our healthcare professionals to discuss your symptoms and treatment options.