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: Pathology
[{'content': 'Which of the following diseases of the skin is the most\nlikely to be associated with partial anodontia? \nSelect and explain. \nA. erythema multiformae, B. hereditary ectodermal dysplasia, C. keratosis follicularits, D. lichen Onus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ectodermal dysplasia is characterized by congenital dysplasia of ectodermaL structures, manifested as hypohidrosis (partial or complete absence of sweat glands) hypotrichosis and hypodontia or partial anodontia.\nTwo types\n\nHypohidrotic (Christ-Siemens-Touraine syndrome) most common type and includes dental manifestations.\nHidrotic (Clouston syndrome)- no specific dental defects are seen.', 'role': 'assistant'}]