What is cutaneous dermatophyte infection?

• Frequent reasons for consultation • Dermatophytes: Filamentous fungi belonging to 3 genera: epidermophyton, microsporum and trichophyton • Dermatophytes properties: - are not saprophytes of the skin, mucous membranes or integuments - are always pathogenic - are affine for keratin: horny layer of the epidermis and integuments (hair, hair and nails) - always respect the mucous membranes - transmission by contact with contaminated hair or scales and adherence of fungal elements to the stratum corneum • General triggering factor: epidermal lesion, whatever its nature (traumatic ...)