* The numbers are taken from the National Foundation for Ectodermal Dysplasias (NFED) database and are not based on medical literature. There are more than 180 distinct types of ectodermal dysplasias cited in the literature. 1. Ectodermal Dysplasia, Specific Type is Unknown by the NFED – 3,168 People Almost half of the people on the NFED…