title: The ectodermal dysplasias.
abstract: In order to be considered an ectodermal dysplasia, a disorder should meet the following criteria: it must be congenital; it must be diffuse (not localized) and must involve the epidermis as well as at least one of its appendages; and it must not be progressive. Included is a discussion of some well-documented, as well as some newer, conditions about which there appears to exist enough information to make some decisions concerning their categorization.
mesh_terms: D001176:Arthrogryposis / Q000235:genetics; D002869:Chromosome Aberrations / Q000235:genetics; D025063:Chromosome Disorders; D002971:Cleft Lip / Q000235:genetics; D002972:Cleft Palate / Q000235:genetics; D004476:Ectodermal Dysplasia / Q000235:genetics*; D005260:Female; D005489:Focal Dermal Hypoplasia / Q000235:genetics; D005808:Genes, Recessive; D006210:Hallermann's Syndrome / Q000235:genetics; D006801:Humans; D007007:Hypohidrosis / Q000235:genetics; D008297:Male; D009958:Orofaciodigital Syndromes / Q000235:genetics; D010859:Pigmentation Disorders / Q000235:genetics