This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fungal infections, Scabies, Pediculosis, Subject name: Dental
[{'content': 'Scutula is classically observed in wof \nSelect and explain. \nA. Favus, B. Small spore ectothrix, C. Endothrix, D. Kerion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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', 'role': 'assistant'}]