Inflammatory Tinea Capitis Due to Microsporum Canis Transmitted from Asymptomatic Domestic Cats

May 2022 in “ Journal of Cutaneous Immunology and Allergy ”

Akira Shimizu, Yuko Kuriyama, Taketoshi Futatsuya, Kazushi Anzawa, Mayu Nishio, Saki Kanai, Osamu Ishikawa, Sei‐ichiro Motegi

tinea capitis Microsporum canis terbinafine scalp lesions molecular analysis microsatellite marker analysis ringworm Lamisil

TLDR Asymptomatic cats can spread scalp infections to humans.

This case study reported on a four-year-old girl with inflammatory tinea capitis caused by Microsporum canis, which was transmitted from her asymptomatic Persian cats. Despite initial treatment with antibiotics and corticosteroids, the scalp lesions persisted until oral terbinafine was administered, leading to complete hair regrowth. The study highlighted that asymptomatic domestic cats could be a source of M. canis infection in humans. Molecular analysis confirmed the transmission route from the cats to the patient. The findings suggested that microsatellite marker analysis could effectively trace the transmission route of M. canis.

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