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: Skin
[{'content': 'Wood lamp is used to diagnose ? \nSelect and explain. \nA. Psoriasis, B. Tinea versicolor, C. Pityriasis rosae, D. Erysipelas', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b i.e., Tinea versicolor Diagnosis of TineaVersicolor Examination of scales in 10% KOH shows sho hyphae and round spores (Sphagetti and meat ball appearance). Wood lamp shows apple green fluorescence (blue-green fluorescence). Skin surface biopsy --> A Cyanoacrylate adhesive (Crazy glue) is used to remove the layer of stratum coreum on glass slide and then stained with PAS reagent.', 'role': 'assistant'}]