The Different Causes of Canker Sores


Story at-a-glance

  • Take note that canker sores are common symptoms of IBDs, especially for Crohn’s disease
  • This illness caused by the Human Immunodeficiency Virus (HIV) could lead to the development of canker sores and other symptoms like dry mouth, tooth decay and gum disease (periodontitis)

Although scientists have not fully determined what really causes painful canker sores, what they have discovered is that they could develop because of a variety of factors and/or medical conditions.1

These Factors Can Increase Your Risk for Canker Sores

Canker sores may appear because of certain events or environmental, emotional or dietary reasons. These include:2

Mouth injuries due to dental work, overzealous brushing, sports mishaps or accidental cheek bite/s

Toothpastes and mouth rinses that contain sodium lauryl sulfate

Food sensitivities to items like chocolate, coffee, strawberries, eggs, nuts, cheese and spicy or acidic foods

Deficiency in vitamin B12, zinc, iron or folate or folic acid

Allergic responses to bacteria strains in the mouth

Helicobacter pylori bacteria that causes peptic ulcers

Hormonal shifts during menstruation

Emotional stress

Certain Diseases Can Pave the Way for Canker Sores

Diseases can pave the way for the onset of canker sores, such as:3


Canker Sore: Introduction

What Is a Canker Sore?

Canker Sore Causes

Canker Sore Types

Canker Sore Symptoms

Canker Sore Treatment

How to Get Rid of Canker Sores

Canker Sore Prevention

Canker Sore Diet

Canker Sore FAQ

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What Is a Canker Sore?

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Canker Sore Types

[+]Sources and References [-]Sources and References

  • 1, 2, 3 Mayo Clinic Staff, “Canker Sore Causes”, Mayo Clinic, March 19, 2015
  • 4 “Celiac Disease,” Interstitial Cystitis Association, March 25, 2015
  • 5 Bowers and Sohrabi, “Symptoms of Crohn’s Disease That Don’t Affect Digestion,” Everyday Health, April 17, 2012
  • 6 “Skin Complications of IBD,” Crohn’s & Colitis Foundation of America
  • 7 Mayo Clinic Staff, “Behcet’s Disease Symptoms and Causes,” Mayo Clinic, February 5, 2016
  • 8 “Causes of Canker Sores and How to Treat Them,” Jefferson Dental Clinics, September 18, 2014
  • 9 “What Are HIV and AIDS?” University of California, San Francisco, August 3, 2011
  • 10 Petrangelo and Krucik, “The Effects of HIV on the Body,” Healthline, October 22, 2014
  • 11 “Mouth Problems and HIV,” National Institute of Dental and Craniofacial Research
  • 12 “HIV Mouth Sores: What They Look Like and How to Treat Them,” September 17, 2013. Healthline