1. What is the EASI Score?

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

Purpose: It helps healthcare professionals assess the severity of eczema and monitor treatment effectiveness.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Severity — Rated 0-3 for erythema, induration/papulation, excoriation, and lichenification (summed)
• Area — Percentage of affected area (0-6 scale)
• Multiplier — Region-specific weight (Head/Neck: 0.1, Upper Limbs: 0.2, Trunk: 0.3, Lower Limbs: 0.4)

Explanation: The score ranges from 0 to 72, with higher scores indicating more severe eczema.

3. Interpretation of EASI Scores

Score Ranges:

• 0 = Clear
• 0.1-1.0 = Almost clear
• 1.1-7.0 = Mild
• 7.1-21.0 = Moderate
• 21.1-50.0 = Severe
• 50.1-72.0 = Very severe

4. Using the Calculator

Instructions: For each body region, enter:

1. Severity score (0-3) based on clinical assessment
2. Area score (0-6) based on percentage of affected area

5. Frequently Asked Questions (FAQ)

Q1: What body regions are assessed?
A: Four regions are evaluated: Head/Neck, Upper Limbs, Trunk, and Lower Limbs.

Q2: How is severity determined?
A: Clinicians assess four signs (erythema, thickness, scratching marks, lichenification) each on a 0-3 scale (0=none, 3=severe).

Q3: How is area percentage scored?
A: 0=0%, 1=1-9%, 2=10-29%, 3=30-49%, 4=50-69%, 5=70-89%, 6=90-100%.

Q4: Why different multipliers for regions?
A: The multipliers account for different proportions of body surface area.

Q5: Who can use this calculator?
A: Primarily for healthcare professionals, though patients can use it with clinical guidance.