National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

Rett syndrome

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How many Americans are diagnosed with Rett syndrome?
Researchers don't know exactly how many people have Rett syndrome. Current estimates suggest that this condition occurs in about 1 in every 10,000 girls worldwide.[1] In the United States, the estimate is that Rett syndrome affects between 1 in 10,000 and 1 in 22,000 females.[2][3][4]
Last updated: 4/25/2016

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  1. What is Rett Syndrome?. Rettsyndrome.org. http://www.rettsyndrome.org/about-rett-syndrome/what-is-syndrome. Accessed 4/25/2016.
  2. How many people are affected by or at risk of Rett syndrome?. Eunice Kennedy Shriver National Institute of Child Health and Human Development. January 14, 2014; https://www.nichd.nih.gov/health/topics/rett/conditioninfo/Pages/risk.aspx.
  3. Bernstein BE. Rett Syndrome. Medscape Reference. July 15, 2015; http://emedicine.medscape.com/article/916377-overview.
  4. Neul JL. Rett Syndrome. National Organization for Rare Disorders (NORD). 2015; http://rarediseases.org/rare-diseases/rett-syndrome/.