The Impact of Chronic Skin Disease on Daily Life (ISDL): a generic and dermatology-specific health instrument.
until further notice
SourceBritish Journal of Dermatology, 158, 1, (2008), pp. 101-8
Article / Letter to editor
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British Journal of Dermatology
SubjectEBP 1: Determinants of Health and Disease; N4i 1: Pathogenesis and modulation of inflammation; N4i 4: Auto-immunity, transplantation and immunotherapy; NCEBP 12: Human Reproduction; NCEBP 2: Evaluation of complex medical interventions; NCEBP 8: Psychological determinants of chronic illness; UMCN 4.2: Chronic inflammation and autoimmunity
BACKGROUND: In dermatological research and clinical practice, there is a need for comprehensive self-report instruments that assess a broad spectrum of health implications of chronic skin diseases, including generic and skin-specific aspects of disease-related quality of life. The advantages of dermatology-specific, multidimensional instruments over generic instruments or single-dimensional quality-of-life measures are in the detailed and specific information they provide about health areas that are affected by the skin condition and that may change through therapeutic intervention. OBJECTIVES: The development of a multidimensional health status inventory for chronic skin diseases (Impact of Chronic Skin Disease on Daily Life, ISDL) is described. The dermatology-specific part of the inventory assesses dimensions of physical functioning, more specifically skin status, physical symptoms of itch, pain and fatigue and scratching responses as well as disease-related stressors like stigmatization. The generic part gauges dimensions of psychological functioning, disease-related impact, illness cognitions and social support by means of existing scales validated for other chronic diseases. METHODS: Reliability and validity of the questionnaire were studied in various samples of patients with psoriasis and atopic dermatitis. RESULTS: The ISDL showed high reliability and test-retest reliability in both patient groups. Convergent validity was indicated by moderate to strong correlations with other validated questionnaires. The scales proved sensitive to change both for dermatological ultraviolet B radiation therapy and cognitive behavioural treatment for itching. CONCLUSION: With its convincing results for reliability and validity the present evaluation supports the usefulness and applicability of the instrument for different chronic skin diseases.
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