What are the symptoms of Angelman syndrome?

Angelman syndrome – Find out more about symptoms, causes and treatment of this rare neurological and developmental disorder. read more

Most babies with Angelman syndrome don't show signs or symptoms at birth. The first signs of Angelman syndrome are usually developmental delays, such as lack of crawling or babbling, between 6 and 12 months. read more

Angelman syndrome (AS) is a genetic disorder that mainly affects the nervous system. Symptoms include a small head and a specific facial appearance, severe intellectual disability, developmental disability, speech problems, balance and movement problems, seizures, and sleep problems. read more

Angelman syndrome affects an estimated 1 in 12,000 to 20,000 people. Most children with Angelman syndrome have microcephaly (small head size) and epilepsy (recurrent seizures). The developmental delay of Angelman syndrome generally becomes noticeable by the age of 6 to 12 months. read more