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. In the United States, the estimate is that Rett syndrome affects between 1 in 10,000 and 1 in 22,000 females.
Last updated: 4/25/2016
We hope this information is helpful. We strongly recommend you discuss this information with your doctor. If you still have questions, please