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': 'Tinea Incognito is \nSelect and explain. \nA. Itchy skin lesion whose causative organism is not known, B. Tinea infection on back, C. Tinea infection seen after corticosteroid treatment, D. Tinea infection of nailbed.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tinea incognito is atypical tinea caused by incorrect treatment of lesions with topical corticosteroids, where the lesions are asymptomatic, extensive and does not have scales.', 'role': 'assistant'}]