This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Child belongs toBihar Shows hypopigmented patches over his face. What is the right diagnosis? \nSelect and explain. \nA. P. alba, B. Leprosy, C. Vitilgo, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: As the child belongs to an endemic area, So our answer is inclined for Leprosy. The disease is clinically characterized by one or more of the three cardinal signs: hypopigmented or erythematous skin patches with definite loss of sensation, thickened peripheral nerves, and acid-fast bacilli detected on skin smears or biopsy material. Ref Robbins 9/e pg 234', 'role': 'assistant'}]