This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Naevi and vessel related disorders, Subject name: Dental
[{'content': 'The 585-nm pulsed dye laser is an effective Rx for following except: \nSelect and explain. \nA. Icthyosis, B. Vascular lesions, C. keloidal scars, D. Molluscum contagiosum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The 585-nm pulsed dye laser is an effective treatment for: Molluscum contagiosum. Keloidal scars. Vascular lesions Treatment of Icthyosis: Topical emmolients Systemic steroids', 'role': 'assistant'}]