<prompt> Adult patient with multiple scaly macules over chest and back, test which can diagnose this condition is are?10 KOH mounWood Lamp examinationSkin biopsyAll the above  <response>: Ans. is d i.e., All the above Information in this question Adult patient Hypopigmented macule With scales Over chest and back Most probable diagnosis is: Pityriasis versicolor Diagnosis of Pityriasis versicolor 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. 