M. ferrugineum is a slow growing, strictly anthropophilic dermatophyte. It generally does not form microconidia and occasionally produces macroconidia in its life cycle. It has a morphology of highly segmented, long, straight and bamboo-like thick walled hyphae. Its only known reservoir is human, mostly children. It causes infections of hairs, nails and skin. Transmission of the dermatophytes can occur via person-to-person contact, and health care workers unknowingly may spread the disease, or it can be transmitted from an infected animal to a person