手法を比較

	EASI（アトピー性皮膚炎面積・重症度指数）	掻痒視覚アナログ尺度（掻痒VAS）
分野	皮膚科学	皮膚科学
系統	Process / pipeline	Process / pipeline
提唱年	2001	1983 (VAS); widely adopted for pruritus 1990s–2000s
提唱者	Hanifin JM, Thurston M	Huskisson EC (VAS methodology); adapted for pruritus in dermatology
種類	Clinician-rated	Self-report
原典	Hanifin JM, Thurston M, Omoto M, et al. The eczema area and severity index (EASI): assessment of reliability in atopic dermatitis. Experimental Dermatology. 2001;10(1):11-18.	Elman S, Hynan LS, Gabriel V, Mayo MJ. The 5-D itch scale: a new measure of pruritus. Br J Dermatol. 2010;162(3):587-593.
別名	EASI Index	Itch VAS, Pruritus Severity Scale
関連	2	3
概要	The EASI is a structured, clinician-administered tool for assessing the extent and intensity of atopic dermatitis across the body. Developed by Hanifin and colleagues in 2001, it divides the body into four regions with weighted area factors, ensuring proportional contribution to total score. EASI has become the primary objective severity measure in atopic dermatitis clinical trials and is recommended by international regulatory authorities (FDA, EMA).	The Pruritus Visual Analog Scale (VAS) is a simple, single-item patient-administered tool measuring itch intensity on a continuous 0–10 (or 0–100) scale. Adapted from the original VAS for pain, it is one of the most frequently used outcome measures in dermatological research and clinical practice due to its simplicity, brevity, and responsiveness to treatment. Pruritus VAS is essential in trials of antipruritic therapies and in conditions where itching is a primary complaint (atopic dermatitis, psoriasis, pruritus ani, lichen planus).