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Mouth Ulcers – What You Should Know: Causes & Care

3 min read
Published by Acibadem Health Point Last updated August 30, 2025

 

Mouth Ulcers – What You Should Know: Causes & Care

Mouth ulcers are painful sores that can appear on the inside of the mouth. They can affect areas like the cheeks, gums, and tongue. These lesions are not contagious but can cause a lot of discomfort.

Understanding what causes mouth ulcers is key to managing them. In this article, we will look at different factors that lead to these painful sores. We will also share strategies for improving oral health and finding relief.

Mouth Ulcers – What You Should Know

Mouth ulcers, also known as canker sores, are small, painful spots in the mouth. It’s important to know what they are if you get them. They can be different sizes and can happen for many reasons.

Things like injury, stress, or health issues can cause them. They feel tender, swell, and have a white or gray base with a red ring around them. Usually, they heal in 1 to 2 weeks, but they can come back often.

Definition and Overview

Mouth ulcers are small lesions that can make eating and speaking hard. They are usually not serious but can be painful. They often show up on the inner cheeks, gums, tongue, or roof of the mouth.

Knowing about mouth ulcers helps you understand why they happen and how to take care of them.

Types of Mouth Ulcers

There are different kinds of mouth ulcers. Each type has its own features. Here are some common ones:

  • Minor Aphthous Ulcers: These are small, usually less than 1 cm, and heal in 10 to 14 days without leaving scars.
  • Major Aphthous Ulcers: These are bigger and deeper, causing more pain. They can take longer to heal and might leave scars.
  • Herpetiform Ulcers: These are clusters of small, painful sores. They look like herpes but are not viral. They heal in 7 to 10 days.
Type of Mouth Ulcer Size Healing Time Scarring Pain Level
Minor Aphthous Ulcers Less than 1 cm 10 to 14 days No Moderate
Major Aphthous Ulcers Greater than 1 cm Several weeks Possible Severe
Herpetiform Ulcers Clusters of small ulcers 7 to 10 days No Moderate to Severe

Common Causes of Mouth Ulcers

Mouth ulcers can come from many sources, affecting our oral health and comfort. Knowing the common causes helps us spot triggers and manage symptoms better.

Injury or Trauma

Physical harm inside the mouth often leads to ulcers. Accidental bites or harsh brushing can cause trauma. Even dental appliances like braces can irritate the mouth, leading to ulcers.

Dietary Deficiencies

Some diet issues can raise the risk of mouth ulcers. Lack of vitamins B12, folate, and iron is a big factor. Without these nutrients, our immune system weakens, making us more prone to ulcers. Eating a balanced diet can help prevent these painful sores.

Stress and Hormonal Changes

Stress can lead to mouth ulcers by weakening our immune system. High stress levels can cause ulcers, more so in those already prone to them. Hormonal changes, like during the menstrual cycle, can also trigger ulcers. Managing stress can help lessen the occurrence and severity of ulcers.

Care and Treatment Options for Mouth Ulcers

Effective care for mouth ulcers depends on their severity and how often they happen. For mild cases, you can use over-the-counter gels or ointments. These products, like those with benzocaine or hydrocortisone, help with pain and healing. Always follow the instructions for the best results.

Keeping your mouth clean is key when you have mouth ulcers. Use a soft-bristled toothbrush for gentle brushing. Rinsing with salt or baking soda can also help soothe and heal. These steps can make you feel better and prevent more ulcers.

If you have mouth ulcers often or they’re really bad, see a doctor. They might give you stronger medicine or suggest changes in your diet. Also, going to the dentist regularly is important. It helps keep your mouth healthy and catches any problems early.

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