Undiagnosed Children’s Day was founded by a mother with an undiagnosed child in USA aboutten years ago to raise awareness of undiagnosed diseases that’s affecting children.

 2022 Wilhelm Foundation thought that it was time after celebrating the Undiagnosed Children’s Day for 8 years, to be more inclusive and change the name to Undiagnosed Day since about 30% of the undiagnosed diseases affect adults. 

350 million People Live With an Undiagnosed Disease (PLWUD) worldwide. Today we know that genome sequencing can provide answers for 40% of PLWUD, but around 60% still don’t receive a diagnosis.

The golden standard for children and adults with Undiagnosed diseases is to be evaluated at an Undiagnosed Diseases Program (UDP). 

The Undiagnosed Diseases Programs are spread all over the world and collaborate in the Undiagnosed Diseases Network International (UDNI). Read more about International Undiagnosed Diseases Programs (UDPs)