Trichothiodystrophy SyndromesLoose Anagen Hair SyndromeHair DiseasesIntelligenceIntellectual DisabilityXeroderma PigmentosumHairIntelligence TestsWechsler ScalesXeroderma Pigmentosum Group D ProteinSyndromeSulfurMenkes Kinky Hair SyndromeTranscription Factor TFIIHCognition DisordersPhotosensitivity DisordersIchthyosisCockayne SyndromeDNA RepairNeuropsychological TestsAging, PrematureUltraviolet RaysDNA HelicasesIntellectual PropertyEchinodermataSulfur CompoundsHair FolliclePyrimidine DimersDown SyndromeTranscription Factors, TFIIMentally Disabled PersonsMutationHair Cells, AuditoryMetabolic Syndrome XDNA-Binding ProteinsTranscription FactorsProteinsSulfur DioxideDiabetic KetoacidosisSulfur Isotopes