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Anisha YA, Prathyusha P, Ashwini SB, Kanthraj GR. Clinically observed geometric melasma area patterns (GMAPs) and its significance in area assessment: a cross-sectional study of 242 cases. Arch Dermatol Res 2024; 316:298. [PMID: 38819672 DOI: 10.1007/s00403-024-03093-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/08/2023] [Accepted: 04/26/2024] [Indexed: 06/01/2024]
Affiliation(s)
- Yapamakula Amarnath Anisha
- Department of Dermatology, Venereology and Leprosy, JSS Medical College and Hospital, JSS Academy of Higher Education and Research (JSSAHER) (Deemed to be University), Mahatma Gandhi Road, Agrahara, Mysuru, Karnataka, 570004, India
| | - Papishetty Prathyusha
- Department of Dermatology, Venereology and Leprosy, JSS Medical College and Hospital, JSS Academy of Higher Education and Research (JSSAHER) (Deemed to be University), Mahatma Gandhi Road, Agrahara, Mysuru, Karnataka, 570004, India
| | - Shankar Bharathi Ashwini
- Department of Dermatology, Venereology and Leprosy, JSS Medical College and Hospital, JSS Academy of Higher Education and Research (JSSAHER) (Deemed to be University), Mysuru, Karnataka, 570004, India
| | - Garehatty Rudrappa Kanthraj
- Department of Dermatology, Venereology and Leprosy, JSS Medical College and Hospital, JSS Academy of Higher Education and Research (JSSAHER) (Deemed to be University), Mahatma Gandhi Road, Agrahara, Mysuru, Karnataka, 570004, India.
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Heidemeyer K, Cazzaniga S, Feldmeyer L, Imstepf V, Adatto M, Lehmann M, Rammlmair A, Pelloni L, Seyed Jafari SM, Bossart S. Skin hyperpigmentation index in melasma: A complementary method to classic scoring systems. J Cosmet Dermatol 2023; 22:3405-3412. [PMID: 37349912 DOI: 10.1111/jocd.15866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 05/08/2023] [Accepted: 06/01/2023] [Indexed: 06/24/2023]
Abstract
BACKGROUND Due to relapsing nature of melasma with significant impact on quality of life, an objective measurement score is warranted, especially to follow-up the patients with melasma and their therapy response in a quantitative and precise manner. AIMS To prove concordance of skin hyperpigmentation index (SHI) with well-established scores in melasma and demonstrate its superiority regarding inter-rater reliability. Development of SHI mapping for its integration in common scores. METHODS Calculation of SHI and common melasma scores by five dermatologists. Inter-rater reliability was assessed by intraclass correlation coefficient (ICC) and concordance by Kendall correlation coefficient. RESULTS Strong concordance of SHI with melasma area and severity index (MASI)-Darkness (0.48; 95% CI: 0.32, 0.63), melasma severity index (MSI)-Pigmentation (0.45; 95% CI: 0.26, 0.61), and melasma severity scale (MSS) (0.6; 95% CI: 0.42, 0.74). Using step function for mapping SHI into pigmentation scores showed an improvement of inter-rater reliability with a difference in (ICC of 0.22 for MASI-Darkness and 0.19 for MSI-Pigmentation), leading to an excellent agreement. CONCLUSION Skin hyperpigmentation index could be an important additional cost-and time-conserving assessment method, to follow-up the patients with melasma undergoing brightening therapies in clinical studies, as well as in routine clinical practice. It is in strong concordance with well-established scores but superior regarding inter-rater reliability.
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Affiliation(s)
- Kristine Heidemeyer
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Simone Cazzaniga
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
- Centro Studi GISED, Bergamo, Italy
| | - Laurence Feldmeyer
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Valentina Imstepf
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Maurice Adatto
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
- Skinpulse Dermatology & Laser Centre, Geneva, Switzerland
- Department of Dermatology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Matthias Lehmann
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Anna Rammlmair
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Lorenzo Pelloni
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - S Morteza Seyed Jafari
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
| | - Simon Bossart
- Department of Dermatology, Inselspital University Hospital of Bern, University of Bern, Bern, Switzerland
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Bang CH, Yoon JW, Ryu JY, Chun JH, Han JH, Lee YB, Lee JY, Park YM, Lee SJ, Lee JH. Automated severity scoring of atopic dermatitis patients by a deep neural network. Sci Rep 2021; 11:6049. [PMID: 33723375 PMCID: PMC7961024 DOI: 10.1038/s41598-021-85489-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 02/26/2021] [Indexed: 11/29/2022] Open
Abstract
Scoring atopic dermatitis (AD) severity with the Eczema Area and Severity Index (EASI) in an objective and reproducible manner is challenging. Automated measurement of erythema, papulation, excoriation, and lichenification severity using images has not yet been investigated. Our aim was to determine whether convolutional neural networks (CNNs) could assess erythema, papulation, excoriation, and lichenification severity at a level of competence comparable to dermatologists. We created a standard dataset of 8,000 clinical images showing AD. Each component of the EASI was scored from 0 to 3 by three dermatologists. We trained four CNNs (ResNet V1, ResNet V2, GoogLeNet, and VGG-Net) with the image dataset and determined which CNN was the most suitable for erythema, papulation, excoriation, and lichenification scoring. The brightness of the images in each dataset was adjusted to − 80% to + 80% of the original brightness (i.e., 9 levels by 20%) to investigate if the CNNs accurately measured scores if image brightness levels were changed. Compared to the dermatologists’ scoring, accuracy rates of the CNNs were 99.17% for erythema, 93.17% for papulation, 96.00% for excoriation, and 97.17% for lichenification. CNNs trained with brightness-adjusted images achieved a high accuracy without the need to standardize camera settings. These results suggested that CNNs perform at level of competence comparable to dermatologists for scoring erythema, papulation, excoriation, and lichenification severity.
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Affiliation(s)
- Chul Hwan Bang
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - Jae Woong Yoon
- Department of Business Management, Kwangwoon University, 536 Nuri Hall, 20, Kwangwoon-ro, Nowon-gu, Seoul, 01897, Korea
| | - Jae Yeon Ryu
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - Jae Heon Chun
- Department of Business Management, Kwangwoon University, 536 Nuri Hall, 20, Kwangwoon-ro, Nowon-gu, Seoul, 01897, Korea
| | - Ju Hee Han
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - Young Bok Lee
- Department of Dermatology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jun Young Lee
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - Young Min Park
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - Suk Jun Lee
- Department of Business Management, Kwangwoon University, 536 Nuri Hall, 20, Kwangwoon-ro, Nowon-gu, Seoul, 01897, Korea.
| | - Ji Hyun Lee
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea.
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Lim ZV, Akram F, Ngo CP, Winarto AA, Lee WQ, Liang K, Oon HH, Thng STG, Lee HK. Automated grading of acne vulgaris by deep learning with convolutional neural networks. Skin Res Technol 2019; 26:187-192. [DOI: 10.1111/srt.12794] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 09/05/2019] [Indexed: 12/25/2022]
Affiliation(s)
| | - Farhan Akram
- Bioinformatics Institute Agency for Science, Technology and Research (A*STAR) Singapore Singapore
| | - Cuong Phuc Ngo
- Bioinformatics Institute Agency for Science, Technology and Research (A*STAR) Singapore Singapore
- Hwa Chong Institution Singapore Singapore
| | - Amadeus Aristo Winarto
- Bioinformatics Institute Agency for Science, Technology and Research (A*STAR) Singapore Singapore
- Hwa Chong Institution Singapore Singapore
| | - Wei Qing Lee
- School of Computing National University of Singapore Singapore Singapore
| | - Kaicheng Liang
- Bioinformatics Institute Agency for Science, Technology and Research (A*STAR) Singapore Singapore
| | | | - Steven Tien Guan Thng
- National Skin Centre Singapore Singapore
- Skin Research Institute Singapore A*STAR Singapore Singapore
| | - Hwee Kuan Lee
- Bioinformatics Institute Agency for Science, Technology and Research (A*STAR) Singapore Singapore
- School of Computing National University of Singapore Singapore Singapore
- Image and Pervasive Access Lab CNRS Singapore Singapore
- Singapore Eye Research Institute Singapore Singapore
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Suryaningsih BE, Sadewa AH, Wirohadidjojo YW, Soebono H. Association between heterozygote Val92Met MC1R gene polymorphisms with incidence of melasma: a study of Javanese women population in Yogyakarta. Clin Cosmet Investig Dermatol 2019; 12:489-495. [PMID: 31308719 PMCID: PMC6614830 DOI: 10.2147/ccid.s206115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 05/20/2019] [Indexed: 11/23/2022]
Abstract
Introduction: Melasma is an acquired hypermelanosis of the face. The pathogenesis of melasma is multifactorial and may be caused by interactions between genetics and the environment. Research has shown that skin pigmentation is regulated by the Melanocortin-1 Receptor gene (MC1R). In Japanese populations, Val92Met and Arg163Gln genotypes of MC1R gene polymorphisms are associated with freckles and lentigo solaris, because they have skin types II–III, but for Indonesians who are skin type IV, hyperpigmentation disorders are often melasma. Purpose: This study aimed to identify the association between Val92Met and Arg163Gln genotypes of MC1R gene polymorphisms with the incidence of melasma in a Javanese women population. Patients and methods: This study used unmatched case-control design, conducted by clinical examination and questionnaire. Data were analyzed with Chi-squared test and Odds Ratio (OR). Results: This study evaluated 158 Javanese women from 18–60 years old with 79 case and 79 control subjects. The genotype of Val92Met was found more common in melasma subjects than in non-melasma (p=0.005) with (OR2.53; 95% CI:1.21–5.29). By using a bivariate test we showed sun exposure and family history of melasma were risk factors for melasma (OR:1.99; 95% CI:1.04–3.78) and (OR:35.32; 95% CI:10.25–121.70). However, genotype of Arg163Gln was not a risk factor for the incidence of melasma (OR: 0.86; 95% CI:0.39–1.89). Conclusion: The findings showed Val92Met genotypes, sun exposure and family history were risk factors for melasma incidence. This is the first study on incidence of melasma in an Indonesian population and contributes to ongoing efforts to understand the mechanisms of melasma.
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Affiliation(s)
- Betty Ekawati Suryaningsih
- Department of Dermatovenereology, Faculty of Medicine Islamic Indonesia University, Yogyakarta, Indonesia.,Department of Dermatovenereology, Faculty of Medicine Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Ahmad Hamim Sadewa
- Department of Biochemistry, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | | | - Hardyanto Soebono
- Department of Dermatovenereology, Faculty of Medicine Universitas Gadjah Mada, Yogyakarta, Indonesia
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Classification of non-tumorous skin pigmentation disorders using voting based probabilistic linear discriminant analysis. Comput Biol Med 2018; 99:123-132. [DOI: 10.1016/j.compbiomed.2018.05.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 05/28/2018] [Indexed: 11/23/2022]
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Demirkan S, Gündüz Ö, Sayan CD. Retrospective Analysis of Endemic Melasma Patients. Dermatol Reports 2017; 9:7027. [PMID: 28652905 PMCID: PMC5475413 DOI: 10.4081/dr.2017.7027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 05/02/2017] [Indexed: 11/23/2022] Open
Abstract
Melasma is an acquired diffuse hypermelanosis characterized by localized, symmetrical, irregular, light-to-dark brown maculae occurring in sun-exposed areas of skin. The aim of this retrospective study was to determine demographics of patients, analysis of etiologic factors, clinical features, efficacy and side effects of available topical treatments due to high incidence of melasma patients. In this study melasma patients in Birecik State Hospital were investigated retrospectively. Between January 2014 and October 2015, 1008 patients had diagnosis of melasma in 49,809 applications of 24,603 different patients who admitted to Dermatology Outpatient Clinics. Of the 1008 patients, 263 had completed 3-month treatment period. These patients did not receive treatment in June, July, August and September. All melasma patients were rural and dealing with agriculture. There was no significant difference between female and male patients in terms of age. Of the 253 female melasma patients, only 2 of them had not child and none of them were using hormone drug. Of the 263 patients with melasma, Fitzpatrick skin type was 3 in 79 (30%) patients, 4 in 184 (70%) patients. Şanliurfa city showed higher fertility rate, sun exposure, and skin type than Turkey as a whole. These predisposing factors may explain higher melasma occurrence in Şanliurfa. Patient information about preventive measures and treatment play important role in treatment of cosmetic condition. The most important measure seems to advise patients about sun-protection especially during pregnancy.
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Silpa-Archa N, Kohli I, Al-Jamal M, Hamzavi I. Automated Melasma Area and Severity Index scoring. Br J Dermatol 2015; 172:1476. [PMID: 26036153 DOI: 10.1111/bjd.13840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- N Silpa-Archa
- Multicultural Dermatology Center, Department of Dermatology, Henry Ford Hospital, Henry Ford Medical Center, New Center One, 3031 West Grand Blvd, Suite 800, Detroit, MI, 48202, U.S.A
| | - I Kohli
- Multicultural Dermatology Center, Department of Dermatology, Henry Ford Hospital, Henry Ford Medical Center, New Center One, 3031 West Grand Blvd, Suite 800, Detroit, MI, 48202, U.S.A
| | - M Al-Jamal
- Multicultural Dermatology Center, Department of Dermatology, Henry Ford Hospital, Henry Ford Medical Center, New Center One, 3031 West Grand Blvd, Suite 800, Detroit, MI, 48202, U.S.A
| | - I Hamzavi
- Multicultural Dermatology Center, Department of Dermatology, Henry Ford Hospital, Henry Ford Medical Center, New Center One, 3031 West Grand Blvd, Suite 800, Detroit, MI, 48202, U.S.A
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