<prompt> A10 yr old boy presented with painful boggy swelling of scalp,multiple sinuses with purulent discharge, easily pluckable hair,and lymph nodes enlarged in occipital region,wof would be most helpful for diagnostic evaluationBiopsy and giemsa stainingBacterial cultureKOH mountPatch test, gram staining and Tzank smear  <response>: TINEA CAPITIS Inflammatory tinea capitis kerion:- Caused by zoophilic dermatophyte e.g., M. canis, which elicit intense inflammation. Presents as a boggy swelling with pustulation. Often, the pus discharges from multiple orifices. Hair from such a swelling is easily and painlessly pluckable. Lymphadenopathy especially occipital invariable. Investigations:- Potassium hydroxide KOH scraping KOH mount: fig:-A: spores inside hair shaft in tinea capitis. Ref:- Neena Khanna; pg num:-284 