Canker Sores

  • Medical Author:
    John P. Cunha, DO, FACOEP

    John P. Cunha, DO, is a U.S. board-certified Emergency Medicine Physician. Dr. Cunha's educational background includes a BS in Biology from Rutgers, the State University of New Jersey, and a DO from the Kansas City University of Medicine and Biosciences in Kansas City, MO. He completed residency training in Emergency Medicine at Newark Beth Israel Medical Center in Newark, New Jersey.

  • Medical Editor: Jerry R. Balentine, DO, FACEP
    Jerry R. Balentine, DO, FACEP

    Jerry R. Balentine, DO, FACEP

    Dr. Balentine received his undergraduate degree from McDaniel College in Westminster, Maryland. He attended medical school at the Philadelphia College of Osteopathic Medicine graduating in1983. He completed his internship at St. Joseph's Hospital in Philadelphia and his Emergency Medicine residency at Lincoln Medical and Mental Health Center in the Bronx, where he served as chief resident.

Quick GuideDental Health: Top Problems in Your Mouth

Dental Health: Top Problems in Your Mouth

What are symptoms and signs of canker sores?

Canker sores are painful sores inside the mouth. They may occur on the tongue, the lining of the cheeks, the gums, the inside of the lips, or the soft palate on the back of the roof of your mouth. Common symptoms of canker sores include the following:

  • A burning, tingling, or prickling sensation, up to 24 hours before the sore appears
  • Crater-like ulcers that are white, gray, or yellow in color, with a red border
  • Sores are usually painful
  • Difficulty speaking, eating, or swallowing

Less common symptoms that can also indicate a more serious underlying infection include:

Contact your doctor or dentist if your canker sores are

  • larger than usual,
  • spreading,
  • lasting more than three weeks,
  • causing severe pain even after taking over-the-counter pain medication,
  • causing difficulty drinking enough fluids to stay hydrated,
  • accompanied by fever. Continue Reading
Reviewed on 9/14/2015
References
REFERENCES:

Femiano, F., Lanza, Alessandro. et al. Guidelines for Diagnosis and Mangement of Aphthous and Stomatitis. The Pediatric Infectious Disease Journal. August 2007; vol 26: pp 728-732.

PubMedHealth.gov. Canker Sore.

University of Maryland Medical Center. Goldenseal.

University of Maryland Medical Center. Licorice.

WebMD.com. Canker Sores.

WebMD.com. Understanding Canker Sore Symptoms.

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