Résumé
Abstract Tinea incognito resulting from corticosteroid abuse is becoming very common in the tropics. Its diagnosis is tricky owing to its confusing morphology, as well as practical and technical issues associated with mycological tests. Dermoscopy has now evolved as a novel diagnostic tool for diagnosing tinea incognito in such challenging situations, since the typical hair changes such as Morse-code hairs, deformable hairs, translucent hairs, comma and cork screw hairs, and perifollicular scaling may be seen despite steroid use, irrespective of mycological results.
Sujets)
Humains , Mâle , Jeune adulte , Teigne/anatomopathologie , Teigne/imagerie diagnostique , Dermoscopie/méthodes , Teigne/étiologie , Hormones corticosurrénaliennes/effets indésirables , Poils/anatomopathologieRésumé
Abstract: Tinea manuum is a dermatophytosis which is often mistaken for other keratodermas, especially palmar psoriasis and chronic hand eczema. We report the use of dermoscopy as a diagnostic aid in a case of tinea manuum. The dermoscopic clue turned out to be the presence of whitish scaling located mainly in the furrows. This aspect has never been seen in other keratodermas and therefore can be considered as a useful finding to assist in the recognition of tinea manuum.
Sujets)
Humains , Femelle , Adulte d'âge moyen , Teigne/imagerie diagnostique , Dermoscopie , Dermatoses de la main/imagerie diagnostique , Psoriasis/diagnostic , Diagnostic différentiel , Eczéma/diagnosticRésumé
Abstract: Tinea nigra is a superficial mycosis whose diagnosis is confirmed by isolating the infectious agent Hortae werneckii through mycological examinations. In vivo reflectance confocal microscopy, initially used in melanocytic dermatosis, has been used with skin infectious diseases to identify the parasite at the cellular level. We report, for the first time in the scientific literature, the use of reflectance confocal microscopy in a case of tinea nigra and compare its findings to dermoscopy and mycological examination results.