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KMID : 0363220100480040266
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Korean Journal of Dermatology
2010 Volume.48 No. 4 p.266 ~ p.271
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The Correlation between SCORAD Index and Instrumental Assessment in Evaluation of Atopic Dermatitis Severity
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Hwang Seon-Wook
Lee Deborah
Kang Ju-Hyun
Sung Ho-Suk
Seo Jong-Keun
Seol Jung-Eun
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Abstract
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Background: Atopic dermatitis is a chronic relapsing inflammatory skin disease characterized by dry skin, pruritus, and typical distribution of the lesions. Because an objective tool for the assessment of disease severity of atopic dermatitis has yet to be agreed upon, many dermatologists are dependent on subjective history and clinical scoring. Recently, instrumental measurements have been used for the assessment of skin barrier function.
Objective: The purpose of this study was to assess the correlation between SCORAD (scoring of atopic Dermatitis) index and the results of instrumental assessments of disease severity in atopic dermatitis. Additionally, we compared the values of instrumental measurements on normal and lesional skin.
Methods: From February to April 2007, 44 patients with atopic dermatitis were treated with topical steroids, topical calcineurine inhibitors, oral antihistamine agents and systemic steroids. At initial visit, and after 1, 2, 3, and 4 weeks of treatment, the SCORAD index was measured, and instrumental measurements of skin surface hydration (SSH), transepidermal water loss (TEWL), and pH were performed on the antecubital fossa (lesional skin) and flank (normal skin) of the patients by Corneometerⓡ, Tewameterⓡ, and skin-pH-meterⓡ.
Results: Significant correlation was found between SCORAD index and SSH (p＜0.0001), TEWL (p＜0.0001), and pH (p=0.1680). SSH and TEWL improved within 1 week of treatment but pH improved after 2 weeks of treatment. Instrumental assessments showed lesional skin had lower SSH, higher TEWL, and more alkaline pH than normal skin.
Conclusion: Instrumental measurements showed correlation with SCORAD index. Therefore, we can use instrumental assessments as well as SCORAD index in the assessment of disease severity of AD.
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KEYWORD
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Atopic dermatitis, pH, SCORAD index, Skin surface hydration, Transepidermal water loss
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