What is the global prevalence of aphthous stomatitis (canker sore)?

Updated: Sep 25, 2020
  • Author: Ginat W Mirowski, MD, DMD; Chief Editor: William D James, MD  more...
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Answer

Recurrent aphthous ulcers occur worldwide and are reported on every populated continent. Recurrent aphthous ulcers affect 2-66% of the international population. [3] . Epidemiologic studies have been conducted in various subpopulations and report data on both point prevalence and lifetime prevalence, as follows:

  • Lifetime prevalence in the adult population in the United States and Canada: 46.4-69.4% [4]
  • Europe lifetime prevalence: 36-37% [4]
  • Sweden point prevalence: 0.5-2% [5, 6]
  • Turkey point prevalence: 1.2-2.3% [7, 8]
  • Jordan lifetime prevalence: 78% [9]
  • Iran lifetime prevalence: 25.2% [10]
  • Sulaimani City, Iraq lifetime prevalence: 28.2% [11]
  • India point prevalence: 1.5% in Northern India [12]
  • India lifetime prevalence: 50.3% [13]

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