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ORIGINAL ARTICLE
Year : 2022  |  Volume : 35  |  Issue : 2  |  Page : 470-476

Onychomycosis: correlation between the dermoscopic patterns and fungal culture


1 Department of Dermatology, Andrology and STDs, Menoufiya University, Menoufiya, Egypt
2 Department of Microbiology and Immunology, Faculty of Medicine, Menoufiya University, Menoufiya, Egypt
3 Department of Dermatology, Al-Hawd Al-Marsoud Dermatology Hospital, Cairo, Egypt

Correspondence Address:
Sohad I Shalaby
Zahra Nasr City, Cairo
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/mmj.mmj_219_21

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Objective The aim was to correlate the results of fungal investigations (Direct KOH and fungal culture) with dermoscopic findings on clinically suspected cases of onychomycosis and to evaluate dermoscope as an alternative tool in diagnosis of such cases. Background Onychomycosis is a fungal infection of the nail plate or nail bed. There are four clinical types of onychomycosis: distal and lateral subungual onychomycosis (DLSOM), proximal subungual onychomycosis (PSOM), white superficial onychomycosis (WSOM), and total dystrophic onychomycosis (TDOM). Patients and methods This study was conducted at Menoufia University Hospital on 44 patients with a clinical diagnosis of onychomycosis. Full history taking and complete general examination were performed to detect associated systemic diseases. Dermatological examination was done to exclude any associated dermatological diseases that can affect the nails, such as psoriasis, lichen planus, alopecia areata, eczema and/or melanomas. Photography of the nail using digital camera and dermoscopic examination of the nail also were done to our patients. Results Jagged proximal edge, longitudinal white striae and chromonychia were more frequently observed in patients with DLSOM. Straight onycholytic area was observed in 4 cases of DLSOM. Subungual hyperkeratosis was significantly associated with TDOM. Leukonychia was significantly associated with PSOM. Our results reported that, all dermoscopic patterns were significantly associated with positive fungal growth cultures. Conclusion Dermoscope may be considered quick, easy, helpful, effective, and inexpensive tool for confirmation the diagnosis of clinically suspected cases of onychomycosis.


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