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Year : 2021  |  Volume : 8  |  Issue : 1  |  Page : 25-29

Dermoscopic analysis of idiopathic guttate hypomelanosis: a cross-sectional study

Department of Dermatology, Mandya Institute of Medical Sciences, Mandya, Karnataka, India

Correspondence Address:
Dr. Shashikumar B. M.
Associate Professor, OPD room no.13, RDL first floor, Department of Dermatology, MIMS, Nehrunagar, Mandya 571401, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/Pigmentinternational.Pigmentinternational_

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Background: Idiopathic guttate hypomelanosis (IGH) is a common pigmentary disorder encountered in older age group, causing cosmetic disfigurement with considerable psychological impact. Diagnosis is generally based on history and clinical features. In the situation of diagnostic dilemma, dermoscopic examination is the quick and easiest method to solve the clinical uncertainty and thereby avoid unnecessary biopsies. Objectives: The aims of the study were to describe the varied clinical presentations and to enumerate the dermoscopic features of IGH. Methods: Study was conducted after obtaining approval from Institutional Ethics Committee. All the patients presenting with IGH attending the Department of Dermatology were examined and enrolled for the study after taking written informed consent. Each subject was evaluated by detailed personal history, clinical examination and dermoscopic examination. Results: A total of 100 patients of IGH were included in the study. The most affected age group was 46–65 years (52%). Females were most commonly affected with M: F ratio 1:1.17. Different dermoscopic patterns of IGH documented were amoeboid (58.2%), feathery (19.1%), petaloid (14.5%) and nebuloid (8.2%). Ten percent of the patients showed more than one patterns. Conclusion: Dermoscope aids in evaluation of different patterns of IGH lesions, which helps to differentiate it from other hypopigmented conditions with considerable overlap in the site, morphology and clinical features. Dermoscopic analysis makes it easier to diagnose the disorder and subsequently plan for the appropriate treatment.

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