So sánh phương pháp

	EASI (Chỉ số mức độ và diện tích bệnh chàm)	POEM (Thước đo Eczema Định hướng Bệnh nhân)	Thang đo thị giác về ngứa (Pruritus VAS)
Lĩnh vực	Da liễu học	Da liễu học	Da liễu học
Họ	Process / pipeline	Process / pipeline	Process / pipeline
Năm ra đời	2001	2004	1983 (VAS); widely adopted for pruritus 1990s–2000s
Người khởi xướng	Hanifin JM, Thurston M	Charman CR, Venn AJ, Williams HC	Huskisson EC (VAS methodology); adapted for pruritus in dermatology
Loại	Clinician-rated	Self-report	Self-report
Công trình gốc	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.	Charman CR, Venn AJ, Williams HC. The Patient-Oriented Eczema Measure: development and initial validation of a new tool for measuring atopic eczema severity from the patients' perspective. Arch Dermatol. 2004;140(12):1513-1519.	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.
Tên gọi khác	EASI Index	POEM Score	Itch VAS, Pruritus Severity Scale
Liên quan	2	2	3
Tóm tắt	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 POEM is a brief, patient-administered severity measure for atopic dermatitis that focuses on frequency of symptoms experienced over the past week. Developed by Charman, Venn, and Williams in 2004, it emphasizes the patient's lived experience rather than clinician observation, making it practical for routine clinical practice and remote monitoring. POEM is increasingly used alongside objective measures in clinical trials and outpatient care.	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).