Favus is caused by:: (A) Blockage of sebaceous duct, (B) Staph aureus, (C) Trichophyton schoenleinii, (D) Trichophyton concentricum
Answer is C. Favus is a form of tinea capitis in which there is formation of crusting lesions (scutula) in the involved region of the infection. It is most often caused by T. schoenleinii.