A group of hereditary disorders involving tissues and structures derived from the embryonic ectoderm. They are characterized by the presence of abnormalities at birth and involvement of both the epidermis and skin appendages. They are generally nonprogressive and diffuse. Various forms exist, including anhidrotic and hidrotic dysplasias, FOCAL DERMAL HYPOPLASIA, and aplasia cutis congenita.

Synonyms: Ectodermal Defects, Congenital, Dysplasia, Ectodermal, Dysplasia Anhidrotic, Ectodermal, Defect, Congenital Ectodermal, Syndrome, Clouston, Hidrotic Ectodermal Dysplasias, Ectodermal Dysplasia, Hydrotic, Ectodermal Dysplasia, Anhidrotic, Ectodermal Dysplasia, Hidrotic, Dysplasia, Anhidrotic Ectodermal, Dysplasias, Hidrotic Ectodermal, Ectodermal Dysplasia, Hidrotic, Autosomal Dominant, Aplasia Cutis Congenita, Hydrotic Ectodermal Dysplasias, Anhidrotic Ectodermal Dysplasia, Anhidrotics, Ectodermal Dysplasia, Anhidrotic, Ectodermal Dysplasia, Ectodermal Dysplasias, Anhidrotic, Dysplasias, Anhydrotic Ectodermal, Clouston Hidrotic Ectodermal Dysplasia, Dysplasias, Hydrotic Ectodermal, Ectodermal Dysplasias, Anhydrotic, Cloustons Syndrome, Dysplasias, Anhidrotic Ectodermal, Ectodermal Dysplasia, Dysplasia, Hydrotic Ectodermal, Hidrotic Ectodermal Dysplasia, Autosomal Dominant, Ectodermal Defect, Congenital, Hidrotic Ectodermal Dysplasia, Defects, Congenital Ectodermal, Dysplasia, Hidrotic Ectodermal, Syndrome, Clouston's, Anhydrotic Ectodermal Dysplasia, Dysplasia, Anhydrotic Ectodermal, Ectodermal Dysplasia, Anhydrotic, Dysplasia Anhidrotics, Ectodermal, Ectodermal Dysplasias, Anhidrotic Ectodermal Dysplasias, Hydrotic Ectodermal Dysplasia, Clouston's Hidrotic Ectodermal Dysplasia, Congenital Ectodermal Defects, Dysplasias, Ectodermal, Ectodermal Dysplasias, Hydrotic, Congenital Ectodermal Defect, Aplasia Cutis Congenita, Nonsyndromic, Anhydrotic Ectodermal Dysplasias, Autosomal Dominant Hidrotic Ectodermal Dysplasia, Clouston's Syndrome, Clouston Syndrome, Ectodermal Dysplasia Anhidrotic, Ectodermal Dysplasia 2, Hidrotic