Trichophyton tonsurans is an anthropophilic dermatophyte, with a worldwide distribution, although its prevalence varies considerably between different geographical regions. Whereas in North America infections due to this fungus are exceptionally common, on the European continent they appear relatively seldom. Although T. tonsurans is primarily associated with tinea capitis, it can also be the cause of tinea corporis and tinea unguium. The course of infection is usually only mildly symptomatic. We describe here two cases of urease-positive T. tonsurans infections with atypically extensive cutaneous lesions and severe inflammatory responses. .
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