This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Anatomy
[{'content': 'Pellagra is characterised by all except \nSelect and explain. \nA. Dementia, B. Diarrhoea, C. Diplopia, D. Dermatitis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Refer Robbins page no 536 8th edition Pellagra is a disease caused by a lack of the vitamin niacin (vitamin B3). Symptoms include inflamed skin, diarrhea, dementia, and sores in the mouth. Areas of the skin exposed to either sunlight or friction are typically affected first.', 'role': 'assistant'}]