What are some key points in dermatophytes?

• Dermatophytosis: superficial cutaneous and nail infection, frequent, due to dermatophytes, keratinophilic filamentous fungi (horny layer of the epidermis, superficial body growths), always pathogenic • Never with mucosal involvement • Dermatophytes are acquired by contamination either by humans, either by the soil or by animals • Moisture, local trauma, occlusion of folds, immunosuppression, diabetes are contributing factors • Clinical lesions are rounded, well limited, with an erythematosquamous border, or vesiculo-pustular, of centrifugal evolution with a clear center