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': 'A 40 year old farmer with a history of recurrent attacks of porphyria complains of itching when exposes to the sun and maculopapular rash on sun exposed areas, his symptoms are exaggerated in the summer. The diagnosis is – \nSelect and explain. \nA. Seborrheic dermatitis, B. Contact dermatitis, C. Psoriasis, D. Porphyria cutanea tarda', 'role': 'user'}, {'content': 'Answer: D \nExplanation: This farmer has\xa0:-\n\nPorphyria\nSkin manifestations (Photosensitivity)\nNo neuropsychiatric manifestations\n\nPorphyrias with only skin manifestations are porphyria cutanea tarda, erythropoietic protoporphyria, congenital erythropoietic porphyria.', 'role': 'assistant'}]