What is International Angelman Day?

Welcome! International Angelman Day (IAD) is observed annually on the 15th February to raise awareness worldwide for Angelman Syndrome (AS) – a rare neurogenetic disorder that affects chromosome 15, resulting in intellectual and developmental delay. It affects about 1 in 15,000 people. The date selected is in recognition of the 15th chromosome affected, and February is International Rare Disease month.

IAD poster 2014

The purpose of this day is to:

  • Raise awareness worldwide of the condition
  • Mobilise people to action & encourage fundraising for the individual organisation in their country
  • Promote research and educational resources in the organisation’s own country
  • Remember those people with Angelman Syndrome who are no longer with us


Please join us all around the world as we unite to commemorate this special day, each year. 



Angelman Syndrome (AS) is a neuro-genetic disorder of Chromosome 15 that results in intellectual and developmental delay. It affects about 1 in 15,000 people. People with Angelman Sydrome have the same basic wants, needs, hopes and dreams as anyone else – a need to feel loved, valued and included, and to experience caring and understanding relationships with family, friends, peers, teachers and their community. An exceptional gift that those with Angelman syndrome usually offer, is affection, joy and unconditional love.

Individuals with Angelman Syndrome are non-speakers or may speak only a few words. Many have mobility issues and may be wheelchair users. Most suffer with seizures and all require life-long 24/7 care. People who have Angelman Syndrome are all unique individuals. They are generally known for their wonderful smiles & warm personalities. All they ask for, is that others take the time to get to know them as a person who faces unique challenges. More information on Angelman syndrome, HERE

The condition is named Angelman Syndrome, after Dr Harry Angelman. In 1965, he was the first person to make an observational diagnosis of 3 children who displayed very similar characteristics. More on Dr Harry Angelman, HERE.

International Angelman Day (IAD) is now supported by over 50 Angelman organisations and interest groups from around the world. Join us from wherever you are, to commemorate this special day. Together we have a stronger voice.


2018 poster




Find us on FACEBOOK:

  • IAD has an official community page on facebook, HERE.
  • And a closed group for discussions, HERE


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