Ahead of the Wilhelm Foundation's World Congress in Nijmegen, The Netherlands 7-8 February 2020, we offered undiagnosed children and young people to participate in our photo project the UNDIAGNOSED . We were helped by Professor Geneticist Wendy van Zellst-Stams who gathered her undiagnosed patients and offered them to take part in a photo shoot with Rick Guidotti, Positive Exposure, who collaborates with the Wilhelm Foundation.