How does the prevalence recurrent aphthous stomatitis (RAS) differ among age groups?

Updated: May 11, 2020
  • Author: Jaisri R Thoppay, DDS, MBA, MS; Chief Editor: Arlen D Meyers, MD, MBA  more...
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RAS normally first arises in childhood or adolescence, predominantly between the ages of 10 and 19 years, with the frequency decreasing in subsequent years. The chance of children with RAS-positive parents presenting with RAS is high, up to 90%, while the chance of presentation in children with RAS-negative parents is just 20%. It is interesting to note that the prevalence of presentation has been found to be five times greater in children with high socioeconomic status. [1]

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