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A study of dermoscopic features of nail psoriasis
Ahu Yorulmaz, Ferda Artuz
Adv Dermatol Allergol 2017; XXXIV (1): 28–35
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Introduction: Dermoscopy is a non-invasive imaging method that enables the evaluation of pigmented and non-pigmented skin lesions. More recently, dermoscopy has been recognized as an effective tool in the diagnosis of nail diseases.
Aim: To evaluate the dermoscopic features of nail psoriasis and to assess the relationship between these features and disease severity.
Material and methods: A total of 67 patients with clinically evident nail psoriasis (14 women, 53 men) were prospectively enrolled. Following a thorough clinical examination, patients were graded according to the Nail Psoriasis Severity Index and physician’s global assessment score. A dermoscopic examination of all fingernails and toenails was performed using a videodermatoscope. Mann-Whitney U and 2 tests were used for statistical analysis, with a significance threshold of p < 0.05.
Results: The most frequently observed dermoscopic features were splinter haemorrhage (73.1%), pitting (58.2%), distal onycholysis (55.2%), dilated hyponychial capillaries (35.8%) and the pseudo-fiber sign (34.3%). The pseudo-fiber sign, dilated hyponychial capillaries, nail plate thickening and crumbling, subungual hyperkeratosis, transverse grooves, trachyonychia, pitting and salmon patches were positively associated with disease severity.
Conclusions: The pseudo-fiber sign described in this study appears to be a novel dermoscopic feature of nail psoriasis. We have demonstrated positive associations between a number of dermoscopic manifestations and disease severity. Further studies are required to support the present findings.
psoriasis, nail, dermoscopy, pseudo-fiber sign, severity
23.06.2017 - 24.06.2017
Lynn S. Bickley
REDAKTORZY WYDANIA POLSKIEGO:
prof. dr hab. n. med. Zbigniew Gaciong
dr n. med. Piotr Jędrusik
Liczba stron: 432
pod redakcją Ligii Brzezińskiej-Wcisło
Liczba stron: 292
pod redakcją Ryszarda Żaby
Liczba stron 176
Liczba stron: 280