Ectodermal Dysplasia 1, Hypohidrotic, X-Linked, also known as christ-siemens-touraine syndrome, is related to ectodermal dysplasia and immune deficiency and ectodermal dysplasia 11b, hypohidrotic/hair/tooth type, autosomal recessive, and has symptoms including dyspnea, dry skin and koilonychia. An important gene associated with Ectodermal Dysplasia 1, Hypohidrotic, X-Linked is EDA (Ectodysplasin A), and among its related pathways/superpathways are Cytokine Signaling in Immune system and Colorectal Cancer Metastasis. The drugs Immunoglobulins and Melatonin have been mentioned in the context of this disorder. Affiliated tissues include skin and eye, and related phenotypes are everted lower lip vermilion and microdontia