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 child is presenting with erythmatous follicular papules on trunk. There are areas of normal skin within the lesions. There is thickening of Palms & soles. This child is suffering from – \nSelect and explain. \nA. Pityriasis rosea, B. Pityriasis rubra pilaris, C. Psoriasis, D. Seborrheic dermatitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Clues are :-\n\n\nErythmatous follicular papules\nInvolvement of trunk\nThickening of Palm and soles (Palmo-Planter keratoderma)\nThe most important one is presence of normal skin within the lesions\n\n\nDiagnosis is nothing other than pityriasis rubra pylaris.', 'role': 'assistant'}]