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: Dental
[{'content': "Vitiligo is associated with the following except \nSelect and explain. \nA. Addison's disease, B. Crohns disease, C. MEN syndrome, D. Pernicious anemia", 'role': 'user'}, {'content': 'Answer: B \nExplanation: VITILIGO\xa0\n\nAcquired autoimmune\xa0disorder characterised by hypomelanosis of skin and hair together with the development of white macules with an absence of melanocytes on microscopy.\n\n\xa0Associations:-\n\nAutoimmune diseases including hyperthyroidism, adrenocortical insufficiency, alopecia areata,MEN syndrome\xa0and pernicious anaemia', 'role': 'assistant'}]