Most common cause of Tinea capitis -

(Harrison) have mentioned that T tonsurans is the most common cause of T capitis. But most textbooks of dermatology have mentioned that Ectothrix is the most common type of T capitis and is caused mostly by M canis. Thus, the answer of this question is M canis. Tinea capitis: - Location of Lesions - Scalp hair Endothrix: fungus inside hair shaft. Ectothrix: fungus on surface of hair. - Clinical Features - Circular bald patches with sho hair stubs or broken hair within hair follicles. Microsporum-infected hairs fluoresce. - Fungi Most Frequently Responsible - T. mentagrophytes, Microsporum canis, Trichophyton tonsurans. - MC cause of 'Endothrix'- Tinea capitis: T tonsurans. - MC cause of 'Ectothrix' -Tinea capitis: M canis. Image: Tinea capitis (Microsporum canis infection) E.floccpsum cause Tinea unguium T. concentricum caus Tinea imbricata Note Microsporum canis and M. audouini both fluoresce with a yellow-green color under Wood's light,