Eczema Area And Severity Index Calculator

EASI Formula:

\[ EASI = \sum (Severity \times Area \times Multiplier) \text{ over regions} \]

Head/Neck Severity (0-3):

Head/Neck Area (0-6):

Upper Limbs Severity (0-3):

Upper Limbs Area (0-6):

Trunk Severity (0-3):

Trunk Area (0-6):

Lower Limbs Severity (0-3):

Lower Limbs Area (0-6):

EASI Score (0-72):

Definition: EASI is a standardized tool for measuring the extent (area) and severity of atopic eczema (atopic dermatitis).

Purpose: It helps clinicians assess and monitor the severity of eczema in patients and evaluate treatment effectiveness.

The calculator uses the formula:

\[ EASI = \sum (Severity \times Area \times Multiplier) \text{ over regions} \]

Where:

Severity — Score (0-3) for redness, thickness, scratching, and lichenification
Area — Affected surface area score (0-6)
Multiplier — Region-specific weight (head/neck 0.2, upper limbs 0.2, trunk 0.3, lower limbs 0.3)

Score Ranges:

Instructions: For each body region, enter the severity score (0-3) and area score (0-6). The calculator will compute the total EASI score.

Q1: How is severity assessed?
A: Severity is rated 0-3 for four signs: redness, thickness, scratching, and lichenification. The average is used.

Q2: How is area assessed?
A: Area scores: 0 (0%), 1 (1-9%), 2 (10-29%), 3 (30-49%), 4 (50-69%), 5 (70-89%), 6 (90-100%).

Q3: Why different multipliers for body regions?
A: Multipliers account for different surface areas of body regions in adults.

Q4: Is EASI used for children?
A: Yes, but area multipliers may differ for younger children with different body proportions.

Q5: What's the maximum EASI score?
A: The theoretical maximum is 72 (all regions with maximum severity and area).