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Mouth Ulcers

0 storiesUpdated Jul 5, 2026

About Mouth Ulcers

Mouth ulcers, also known as canker sores or aphthous ulcers, are small, painful lesions that can develop inside the mouth. They typically appear on the soft tissues, such as the tongue, inner cheeks, or gums, and can make eating, drinking, and speaking uncomfortable.

Common Symptoms

  • Painful sores inside the mouth
  • Redness around the sores
  • Difficulty eating or drinking
  • Discomfort during speaking
  • Small, white or yellow center with a red border

Diagnosis

Mouth ulcers are commonly diagnosed through a visual examination by a healthcare professional. In some cases, if ulcers are recurrent or unusually severe, further tests may be conducted to rule out underlying conditions.

Causes

The exact cause of many mouth ulcers is not fully understood, but common triggers may include minor mouth injuries, stress, certain foods, and vitamin deficiencies. Some ulcers may also be associated with underlying medical conditions or viral infections.

Treatment Overview

Managing mouth ulcers often includes over-the-counter pain relievers and topical gels or rinses designed to reduce discomfort and promote healing. For persistent or severe cases, a healthcare provider may suggest prescription medications. Some individuals also explore complementary approaches like herbal remedies or dietary adjustments, although their effectiveness can vary and should be discussed with a healthcare professional.

Prognosis & Outlook

Most common mouth ulcers are benign and typically heal on their own within one to two weeks without intervention. Recurrent ulcers may occur, and for some individuals, they can be a chronic issue requiring ongoing management strategies.

Types & Variants

  • Minor Aphthous Ulcers

    The most common type. They are usually small, oval-shaped with a red edge, and heal without scarring in one to two weeks.

  • Major Aphthous Ulcers

    Less common, these ulcers are larger and deeper with irregular edges. They can take up to six weeks to heal and may leave significant scars.

  • Herpetiform Aphthous Ulcers

    Uncommon and typically develop later in life. They are pinpoint size, occur in clusters of 10 to 100, and often merge into one large ulcer.

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