<prompt> Alopecia thin brittle nail, sparse hair with thin enamel diagnosis is ?Ectodermal dysplasiaAlopecia aerataAlopica congenitaNone of above  <response>: Ans. is a i.e., Ectodermal dysplasia Ectodermal dysplasia Group of syndrome All derived from ectodemal structure Abnormalities of two or more ectodermal structure such as Hair Teeth Nail Sweat gland Cranio facial structure Digit 