This case report describes three patients (ages 2-24) who had skin infections caused by a fungus called Microsporum canis that initially was misdiagnosed as eczema or other simple skin conditions. The infections involved fine vellus hair and required prolonged combined treatment with both oral and topical antifungal medications to fully resolve. The key lesson is that proper fungal testing and extended treatment similar to scalp ringworm protocols are necessary for treating these easily-missed infections.