Dermatophytic melanonychia: A case series of an increasing disease.
Adolescent
Adult
Aged
Aged, 80 and over
Arthrodermataceae
/ isolation & purification
Diagnosis, Differential
Female
Humans
Incidence
Male
Melanins
Melanoma
/ diagnosis
Middle Aged
Nail Diseases
/ diagnosis
Nevus, Pigmented
/ diagnosis
Onychomycosis
/ diagnosis
Pigmentation Disorders
/ diagnosis
Retrospective Studies
Skin Neoplasms
/ diagnosis
Young Adult
melanized fungi
morphology
onychomycosis
Journal
Mycoses
ISSN: 1439-0507
Titre abrégé: Mycoses
Pays: Germany
ID NLM: 8805008
Informations de publication
Date de publication:
May 2021
May 2021
Historique:
revised:
14
12
2020
received:
15
11
2020
accepted:
27
12
2020
pubmed:
7
1
2021
medline:
22
9
2021
entrez:
6
1
2021
Statut:
ppublish
Résumé
Melanonychia refers to brown-black colour pigmentation due to melanin or not-melanin deposition in the nail plate. Onychoscopy allows to distinguish if the pigmentation is due by melanin or not. The main causes of non-melanic pigmentation are subungual haematoma and pigmented onychomycosis. Fungal melanonychia (FM) is rare and may present as diffuse or longitudinal pigmentation. Differential diagnosis includes melanic activation, such as ethnic-type nail pigmentation or frictional melanonychia, but also versus melanic proliferation, such as nevus or nail melanoma. Fungal melanonychia can be due to a colonisation by fungi with black variant or by melanin activation due to inflammation of fungal invasion. The aim of paper is to increase clinical and dermoscopic knowledge of this increasingly frequent disease. In this retrospective observational study, twenty patients with dermatophytic melanonychia were collected, with available clinical and dermoscopic pictures. The diagnosis of dermatophytic melanonychia was made based on clinical manifestation and mycological examination. KOH smear was performed in all cases. For each patient, clinical data included: age, gender, type of melanonychia and involved fingers. This study aimed to show increased incidence of dermatophytic melanonychia and its correct management. In addition, we reviewed our collected cases and described the clinical and dermoscopic features of dermatophytic melanonychia. The results of this study showed that physicians should keep in mind the diagnosis of this increasing disease, and that it cannot be performed relying only on clinical grounds. We would like to highlight the importance of tools as KOH examination, culture and dermoscopy.
Sections du résumé
BACKGROUND
BACKGROUND
Melanonychia refers to brown-black colour pigmentation due to melanin or not-melanin deposition in the nail plate. Onychoscopy allows to distinguish if the pigmentation is due by melanin or not. The main causes of non-melanic pigmentation are subungual haematoma and pigmented onychomycosis. Fungal melanonychia (FM) is rare and may present as diffuse or longitudinal pigmentation. Differential diagnosis includes melanic activation, such as ethnic-type nail pigmentation or frictional melanonychia, but also versus melanic proliferation, such as nevus or nail melanoma. Fungal melanonychia can be due to a colonisation by fungi with black variant or by melanin activation due to inflammation of fungal invasion.
OBJECTIVES
OBJECTIVE
The aim of paper is to increase clinical and dermoscopic knowledge of this increasingly frequent disease.
METHODS
METHODS
In this retrospective observational study, twenty patients with dermatophytic melanonychia were collected, with available clinical and dermoscopic pictures. The diagnosis of dermatophytic melanonychia was made based on clinical manifestation and mycological examination. KOH smear was performed in all cases. For each patient, clinical data included: age, gender, type of melanonychia and involved fingers.
RESULTS
RESULTS
This study aimed to show increased incidence of dermatophytic melanonychia and its correct management. In addition, we reviewed our collected cases and described the clinical and dermoscopic features of dermatophytic melanonychia.
CONCLUSIONS
CONCLUSIONS
The results of this study showed that physicians should keep in mind the diagnosis of this increasing disease, and that it cannot be performed relying only on clinical grounds. We would like to highlight the importance of tools as KOH examination, culture and dermoscopy.
Substances chimiques
Melanins
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
511-519Informations de copyright
© 2021 Wiley-VCH GmbH.
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