SCORAD Calculator - SCORing Atopic Dermatitis

Enter the affected body area, the six clinical intensity signs, and the itch/sleep-loss scores to compute the SCORAD index using the standard A/5 + 7B/2 + C formula.

Quick Facts

Formula
SCORAD = A/5 + 7B/2 + C
A = extent (0-100), B = sum of 6 intensity signs (0-18), C = pruritus + sleep loss (0-20). Total range 0-103.
Severity bands
Mild <25, moderate 25-50, severe >50
Commonly cited cut points used in dermatology literature and trials.
Six intensity signs
Each scored 0 (none) to 3 (severe)
Erythema, edema/papulation, oozing/crusting, excoriation, lichenification, dryness (assessed on uninvolved skin).

Your Results

Calculated
Total SCORAD
-
A/5 + 7B/2 + C, out of 103
Objective SCORAD
-
A/5 + 7B/2, excludes symptoms
Subjective score (C)
-
Pruritus + sleep loss, out of 20
Severity band
-
Mild / moderate / severe

Ready

Enter the extent, intensity, and symptom scores, then calculate the SCORAD index.

About the SCORAD Calculator - SCORing Atopic Dermatitis

SCORAD (SCORing Atopic Dermatitis) is a clinical index used to grade the extent and severity of atopic dermatitis (eczema). It combines three components into one score: A, the percentage of body surface affected; B, the sum of six clinical intensity signs; and C, the patient- or caregiver-reported pruritus and sleep-loss scores. The combined formula is SCORAD = A/5 + 7B/2 + C, producing a total between 0 and 103.

How to score each component

  • Extent (A): Estimate the percent of total body surface area with active atopic dermatitis using the rule of nines (each arm ~9%, each leg ~18%, head ~9%, front and back trunk ~18% each). Value ranges 0-100.
  • Intensity (B): Score six signs on representative affected skin, each from 0 (absent) to 3 (severe): erythema, edema/papulation, oozing/crusting, excoriation, lichenification, and dryness (dryness is assessed on uninvolved skin). Sum the six scores for a 0-18 range.
  • Subjective symptoms (C): Ask the patient or caregiver to rate average pruritus and average sleep loss over the last 3 days/nights, each on a 0-10 visual analog scale. Sum the two for a 0-20 range.

Putting the result in context

A total SCORAD below 25 is generally described as mild disease, 25-50 as moderate, and above 50 as severe. These bands are widely referenced in dermatology trials and guidelines, but SCORAD is one input among several a clinician weighs — it does not by itself dictate a treatment plan.

When to consult a professional

This calculator performs the arithmetic only; it does not diagnose atopic dermatitis or recommend treatment. Component scores (especially intensity signs) require visual assessment of the skin, ideally by a trained clinician, and any change in treatment should be discussed with a licensed healthcare provider.

Frequently Asked Questions

What is the SCORAD formula?
SCORAD = A/5 + 7B/2 + C, where A is the percent of body surface area affected (0-100, rule of nines), B is the sum of six intensity signs each scored 0-3 for a 0-18 range (erythema, edema/papulation, oozing/crusting, excoriation, lichenification, dryness), and C is the sum of pruritus and sleep-loss visual analog scores, each 0-10, for a 0-20 range. The total ranges from 0 to 103.
What do the SCORAD severity bands mean?
A total SCORAD score below 25 is generally classed as mild atopic dermatitis, 25 to 50 as moderate, and above 50 as severe. These bands are widely used in dermatology literature to describe extent and intensity, not a substitute for a clinician's overall assessment.
What is objective SCORAD (oSCORAD)?
Objective SCORAD is A/5 + 7B/2, the same formula without the subjective pruritus and sleep-loss component (C). It is used when the subjective symptoms cannot be reliably reported, such as in young children, and removes up to 20 points of self-reported input from the total.

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