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
[{'content': 'Alopecia thin brittle nail, sparse hair with thin enamel diagnosis is ? \nSelect and explain. \nA. Ectodermal dysplasia, B. Alopecia aerata, C. Alopica congenita, D. None of above', 'role': 'user'}, {'content': "Answer: A \nExplanation: 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", 'role': 'assistant'}]