BACKGROUND: Psoriasis is a chronic inflammatory skin disease with a genetic basis. Its ill-defined causes make it difficult to diagnose. This study aims to develop a diagnostic checklist for psoriasis classification in the context of traditional Chinese medicine.
METHODS: A Delphi study was conducted with three rounds by a panel of 16 dermatology experts to develop a checklist for traditional Chinese medicine symptoms and signs of psoriasis. Dermatology experts in psoriasis research, nine in Yunnan and seven in Beijing, were selected as the expert panel. The initial list of symptoms and signs in psoriasis was developed by reviewing the literature retrieved from Chinese and English journals. Experts rated each item of the list on a 5-point Likert scale. The list was revised and re-evaluated in the same manner for a total of 3 rounds before it was finalized.
RESULTS: One hundred and thirty items were extracted from the literature review. After three rounds of expert ratings, 96 items were retained with eight domains: color, type and shape of skin lesion, physical expression, tongue and coating, pulse, associated factors, and living environment. Intraclass correlation coefficient and Kappa statistics indicated an inter-rater agreement in the final checklist.
CONCLUSION: A checklist containing 96 items in 8 domains was developed for psoriasis diagnosis using traditional Chinese medicine symptoms and signs.
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