What is Angelman syndrome?
Angelman syndrome (AS) is an inherited neurological disorder resulting in severe learning difficulties, developmental delay, and typical facial appearance and behavior. The most common age of diagnosis with Angelman syndrome is between three and seven years when the signs become most evident. AS affects about 1 in 12,000 to 20,000 people.
To learn more about genetics and to better understand how genes cause syndromes, see Your Child: Genetic Syndromes.
Where can I find more information and support?
- YourChild: Genetic Syndromes
- YourChild: Chronic Conditions
- YourChild: Developmental Delay
- YourChild: Learning Disabilities
- YourChild: Siblings of Children with Special Needs
- Angelman syndrome information page from the National Institutes of Health (NIH) National Institute of Neurological Disorders and Stroke.
- Angelman syndrome from the Genetics Home Reference, part of NIH, has basic information and lots of useful links.
- The Angelman Syndrome Foundation (ASF) promotes education, information exchange and research. They can put you in touch with a local contact family, and their site provides lots of information.
- International AS resources from the ASF.
- Asociación Síndrome Angelman: Spanish organization; however, this site may not currently be under maintenance.
Compiled by Kyla Boyse, RN. Reviewed by faculty and staff at the University of Michigan
Updated January 2013