anhidrotic ectodermal dysplasia, a congenital X-linked disorder fully expressed in males, or rarely an autosomal-recessive trait with full expression in both sexes, characterized by ectodermal dysplasia associated with aplasia or hypoplasia of the sudoriferous glands, hypothermia, alopecia, anodontia, conical teeth, and typical facies with frontal bossing, midfacial hypoplasia, saddle nose, large chin, and thick lips. Also called Christ-Siemens-Touraine syndrome, congenital ectodermal defect, hypohidrotic ectodermal dysplasia, antihidrotic.
