Indian Journal of Dermatology
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Year : 2015  |  Volume : 60  |  Issue : 3  |  Page : 272-275

Dermoscopy to detect signs of subclinical nail involvement in chronic plaque psoriasis: A study of 68 patients

Department of Dermatology, Seth G.S Medical College and K.E.M Hospital, Mumbai, Maharashtra, India

Correspondence Address:
Uday S Khopkar
Department of Dermatology, Seth G.S Medical College, K.E.M Hospital, Mumbai 400 012, Maharashtra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0019-5154.156377

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Background: Onychopathies constitute one of the major challenges faced by a dermatologist in terms of its early detection and diagnosis. Utility of dermoscope as a tool for detection is increasing by the day and its use in onychopathies needs to be explored. Aims: To study the dermoscopic features of nails in patients of chronic plaque psoriasis. Materials and Methods: In a cross-sectional study, a total of 68 patients with chronic plaque psoriasis were recruited. Dermoscopy of nail plate was conducted and were compared with equal number of age and sex matched healthy volunteers. Results: Forty-six patients showed dermoscopic findings. Twenty-two patients did not show any dermoscopic findings. Coarse pits (18/46, P < 0.0001), onycholysis (10/46, P < 0.001), oil drop sign (2/46, P = 0.12) and splinter hemorrhages (5/46, P = 0.05) were seen. In addition certain findings of interest were stout, globose, dilated, pink- to red-colored nail bed vessels arranged longitudinally at the onychodermal band surrounded by a prominent halo (9/46, P = 0.01). In contrast, splinter hemorrhages appeared as streaks and were purple in color. Conclusion: In a psoriasis patient, dermoscope can be a useful tool to detect early nail involvement in psoriasis and aid in differentiating it from other disorders of nails.

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