SCORAD Calculator

The SCORAD (SCORing Atopic Dermatitis) index is a clinical tool used to assess the severity of atopic dermatitis (eczema). It combines objective clinical signs with subjective patient symptoms.

About SCORAD

The SCORAD score ranges from 0 to 103 and consists of three components:

• A: Body Surface Area (0-100) - Extent of affected skin using the rule of nines
• I: Intensity (0-18) - Sum of 6 clinical signs (each scored 0-3)
• S: Subjective Symptoms (0-20) - Itch and sleep loss (each 0-10)

Formula

SCORAD = (A/5) + (7I/2) + S

Interpretation

• Mild: < 25
• Moderate: 25-50
• Severe: > 50

Calculator

SCORAD Calculator

SCORing Atopic Dermatitis - Severity assessment tool

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Step 1 of 4: Body Surface Area

Body Surface Area

Estimate the percentage of each body region affected by atopic dermatitis:

Head & NeckMaximum: 9% of total BSA

%

Upper Limb - LeftMaximum: 9% of total BSA

%

Upper Limb - RightMaximum: 9% of total BSA

%

Lower Limb - LeftMaximum: 18% of total BSA

%

Lower Limb - RightMaximum: 18% of total BSA

%

Anterior TrunkMaximum: 18% of total BSA

%

BackMaximum: 18% of total BSA

%

GenitalsMaximum: 1% of total BSA

%

Total BSA: 0.0%

Clinical Use

The SCORAD index is used to:

• Assess disease severity at initial evaluation
• Monitor treatment response over time
• Guide treatment decisions (step-up or step-down therapy)
• Standardize reporting in clinical trials

Components Explained

Body Surface Area (A)

Estimate the percentage of each body region affected:

Region	Maximum BSA
Head & Neck	9%
Upper Limbs (each)	9%
Lower Limbs (each)	18%
Anterior Trunk	18%
Back	18%
Genitals	1%

Intensity Signs (I)

Rate the intensity of these 6 signs on the most affected area:

1. Redness (Erythema)
2. Swelling (Edema/Papulation)
3. Oozing/Crusting
4. Scratch Marks (Excoriation)
5. Skin Thickening (Lichenification)
6. Dryness

Each sign is scored:

• 0 = None
• 1 = Mild
• 2 = Moderate
• 3 = Severe

Subjective Symptoms (S)

Patient-reported symptoms over the past 3 days using a Visual Analogue Scale (0-10):

• Itch (Pruritus): 0 = no itch, 10 = worst imaginable
• Sleep Loss: 0 = no sleep loss, 10 = complete sleep loss

References

• European Task Force on Atopic Dermatitis. Severity scoring of atopic dermatitis: the SCORAD index. Dermatology. 1993;186(23-31).
• Chu DK, Schneider L, Asiniwasis RN, et al. Atopic dermatitis (eczema) guidelines: 2023 American Academy of Allergy, Asthma and Immunology/American College of Allergy, Asthma and Immunology Joint Task Force on Practice Parameters GRADE- and Institute of Medicine-based recommendations. Ann Allergy Asthma Immunol. 2024;132(3):274-312. doi:10.1016/j.anai.2023.11.009
• Sanofi Campus - SCORAD Information

Disclaimer

This calculator is for educational and clinical reference purposes. Always use clinical judgment and consider the full clinical picture when making treatment decisions.