This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Alopecia thin brittle nail, sparse hair with thin enamel diagnosis is ? 
Select and explain. 
A. Ectodermal dysplasia, B. Alopecia aerata, C. Alopica congenita, D. None of above
A: Ectodermal dysplasia
Answer: A: Ectodermal dysplasia 
Explanation: 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