Common Pigmentary Skin Lesions in Dark Skin People: A Dermoscopic Evaluation

Document Type : Original Article

Authors

1 Dermatology, Andrology and Venereology, Faculty of Medicine, Department of Assiut University, Assiut, Egypt.

2 Department of Dermatology, Andrology and Venereology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt.

3 Dermatology, Andrology and Venereology, Faculty of Medicine, Department of 1Assiut University, Assiut, Egypt.

Abstract

Background: Nowadays, dermoscopy is a helpful technique for assessing pigmentary skin lesions. It symbolizes a link between clinical and histological sights. Dermoscopy is a non-invasive diagnostic technique that allows the visualization of morphologic features not detectable by the naked eye; accordingly, it represents a link between macroscopic clinical dermatology and microscopic dermatopathology. Aim: To appraise the usefulness of the hand-held dermoscope (x10) in evaluating different pigmentary skin lesions in dark skinned people, and to identify dermoscopic patterns of pigmentary skin lesions among those people. Patients and Methods: A descriptive study was carried out on 105 patients with different clinical forms of pigmentary skin lesions. Dermoscopic examination was done on all patients to delineate the dermoscopic findings. Results: Different dermoscopic features are present for different pigmentary skin lesions, both hypo- and hyperpigmented. For example, melanocytic nevi showed a homogenous pattern, globular and reticular patterns, pseudo-network, and cobblestone pattern, while vitiligo showed a white glow with pigmented edge and interfollicular pigmentation. Conclusion: Dermoscopy is a method that expands clinicians' diagnostic accuracy. It is a valuable tool for helping dermatologists diagnose pigmentary skin lesions in routine clinical practice. Pigmentary skin lesions showed specific dermoscopic criteria that may aid the clinical diagnosis. 

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