<prompt> Scutula is classically observed in wofFavusSmall spore ectothrixEndothrixKerion  <response>: Favus:- Characterized by presence of foul- smelling, Yellow cup-shaped crusting scutula on scalp; ahroconidia and airspaces within hair shaft . often results in cicatricial alopecia. Causative organism:- T. schoenleinii M. gypseum, T. violaceum. Ref:- Review of Dermatology by Alikhan; pg num:- 305,306 