Limitations of dermoscopy in detecting distal and lateral subungual onychomycosis among patients with severely dystrophic nail psoriasis

Journal of the Egyptian Women s Dermatologic Society

article

Mohamed H.M. El-Komy¹  Sara H. Aboelmagd³  Haidy S. Khalil⁴  Reem M. Abdelrahman⁴  Nermeen I. Bedair⁴ 

[1] Department of Dermatology, Faculty of Medicine, Cairo University;Kasr Al-Ainy Psoriasis Unit, Faculty of Medicine, Cairo University;Department of Dermatology, Banha Children Hospital;Faculty of Medicine, Helwan University

关键词: dermoscopy;    onychomycosis;    psoriasis;   

DOI  :  10.4103/jewd.jewd_43_21

学科分类：皮肤病学

来源: Egyptian Women s Dermatological Society

【 摘 要 】

Background  Onychomycosis among patients with nail psoriasis is being increasingly reported in the literature. When the two conditions coexist in the same nail, it is usually difficult to clinically detect the fungal nail affection. Objective  To study the value of dermoscopy in detecting distal and lateral subungual onychomycosis among patients with nail psoriasis. Patients and methods  Fifty psoriasis patients with nail changes were subjected to full history and clinical examination, including targeted Nail Psoriasis Severity Index calculation, dermoscopic examination and nail scrapping for fungal culture on Sabouraud dextrose agar, and dermatophyte (DM) test medium. Results  Twelve (24%) of the 50 patients recruited showed a positive mycological growth on culture. Nondermatophyte molds and DM were isolated from 16 and 8% of patients, respectively. Nail psoriasis severity was not affected by fungal growth on culture and no significant relation could be detected between culture results and nail dermoscopic findings. Conclusion  Specific dermoscopic signs of distal and lateral subungual onychomycosis do not appear to be evident in severely dystrophic psoriatic nails even when culture results show growth for DM and/or nondermatophyte molds.

【 授权许可】

CC BY