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Angelman syndrome is a genetic disorder causing developmental delays, speech issues, balance problems, seizures, and frequent smiling and laughter.

The five-year-old also has Angelman syndrome – a neurogenetic disorder affecting about 1 in 15,000 people and approximately 500,000 worldwide.

“Angelman syndrome is a genetic development disability,” said Dr. Wendy Pierce, Pediatric Rehabilitation and Medicine Specialist at Children’s Hospital Colorado.

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Colin Farrell’s son has Angelman syndrome, a rare genetic disorder. Find out what it means, symptoms to watch for, and how research is evolving.

What is Angelman syndrome? Angelman syndrome is a rare genetic condition that affects the nervous system and causes severe physical and learning disabilities, according to the NHS.

Doctors initially thought Colin Farrell's son, James, had cerebral palsy before he was diagnosed with the rare disorder Angelman syndrome.

What is Angelman syndrome? Angelman syndrome is a rare genetic condition that affects the nervous system and causes severe physical and learning disabilities, according to the NHS. It is diagnosed ...