Microsporum Canis infection: A case series

Microsporum canis is a zoophilic dermatophyte commonly transmitted from cats to humans and presents with localized dermatophytosis. We report a case series of four patients with M. canis infection presenting as small, coin-shaped annular plaques with characteristic collarette of scales. All patients had a history of close contact with pet cats showing alopecic patches. Dermoscopy consistently revealed superficial scales, collarette of scales, scaling along creases, and diffuse erythema. Diagnosis was confirmed by KOH examination and fungal culture. All cases responded completely to topical and systemic azole therapy. This series highlights the role of dermoscopy and animal contact history in early diagnosis of M. canis infection.