Microbiology Mycology 84dc3f2c Favus is caused by: A Blockage of sebaceous duct B Staph aureus C Trichophyton schoenleinii D Trichophyton concentricum High-Yield Explanation 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.