π¬ SCORAD Calculator
Eczema severity: area, intensity, symptoms.
For informational purposes only, not medical advice. Consult a healthcare professional.
SCORAD, the Scoring Atopic Dermatitis index, is the standard research measure of eczema severity, combining three domains: extent of affected skin, intensity of six signs, and subjective itch plus sleep loss. The formula weights them as area over 5, plus 7 times intensity over 2, plus symptoms, for a 0 to 103 scale. Under 25 is mild, 25 to 50 moderate, and above 50 severe. Trials use it to prove treatments work; clinicians use it to track whether they are working. This calculator computes it for tracking and discussion.
How to Use This Calculator
Enter the affected body surface percentage, rate the six intensity signs 0 to 3 at a representative site, and score itch and sleep loss 0 to 10.
Estimate affected area with the rule of nines: each arm 9 percent, each leg 18, torso front and back 18 each, head 9.
Grade the six intensity signs, erythema, edema, oozing, excoriation, lichenification, dryness, from 0 absent to 3 severe at a representative patch.
Score itch and sleep loss 0 to 10 for the last 3 days. The calculator combines all three domains.
How the Math Works
A is the affected body surface percentage, B the sum of six intensity signs each graded 0 to 3 (maximum 18), and C the sum of itch and sleep loss each 0 to 10 (maximum 20). SCORAD equals A divided by 5 plus 7B divided by 2 plus C. With 20 percent area, intensity sum 10, itch 6 and sleep loss 4: 4 plus 35 plus 10 is 49, borderline moderate to severe. The weighting gives intensity the largest voice, which matches clinical judgment that angry inflamed skin matters more than widespread mild dryness. Objective SCORAD omits the symptom domain for a 0 to 83 scale used when subjective scores are unreliable.
Worked Example
With 20 percent body area affected, intensity sum 10, itch 6, and sleep loss 4, the SCORAD is 49.0, which the calculator places in the Moderate band. The intensity domain contributes 35.0 of the total, dominating the score exactly as designed: the inflamed, excoriated patches drive severity more than the raw area. Dropping the itch from 6 to 2 with treatment would move the total down 4 points all by itself.
Reading Your Result
Under 25 is mild and usually managed with emollients and topical steroids. The 25 to 50 moderate band is where treatment steps up: stronger topicals, wet wraps, or phototherapy enter the plan. Above 50 is severe and the range where systemic therapies and biologics like dupilumab are considered. Track the score across visits: a 10-point fall is generally meaningful, and the trend matters more than any single number.
| SCORAD | Severity | Typical step |
|---|---|---|
| Under 25 | Mild | Emollients, mild topicals |
| 25-50 | Moderate | Stronger topicals, phototherapy |
| Above 50 | Severe | Systemic therapy considered |
Limitations
Intensity grading is subjective and varies between assessors; the same patient scores differently with different graders. The symptom domain reflects the last 3 days, so flares and remissions swing it. SCORAD measures severity, not quality of life directly, though the two correlate. Treatment decisions integrate the score with history, triggers, and patient preference.
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For informational purposes only, not medical advice. Consult a healthcare professional.
Frequently Asked Questions
What is SCORAD?
Scoring Atopic Dermatitis: the standard eczema severity index combining affected area, six intensity signs, and itch plus sleep loss into a 0 to 103 score. Under 25 is mild, 25 to 50 moderate, above 50 severe. Used in trials and clinics worldwide.
How is SCORAD calculated?
A over 5 plus 7B over 2 plus C, where A is body surface percent, B sums six 0-to-3 intensity signs, and C sums 0-to-10 itch and sleep loss. The weighting emphasizes intensity, the domain clinicians weight most.
What are the six intensity signs?
Erythema (redness), edema or papulation (swelling), oozing or crusting, excoriation (scratch marks), lichenification (thickened skin), and dryness. Each graded 0 absent to 3 severe at a representative site. Together they capture the inflammation.
What is objective SCORAD?
The score without the itch and sleep-loss questions: A over 5 plus 7B over 2, maximum 83. Used when subjective symptoms are unreliable, such as in young children, or when a purely observer-rated measure is wanted.
How is SCORAD different from EASI?
EASI scores four body regions separately with area and severity, while SCORAD uses total area plus global intensity and adds symptoms. Trials often report both. EASI is purely objective; SCORAD includes the patient voice.
What SCORAD qualifies for biologics?
Thresholds vary by guideline and payer, but severe disease above 50, or moderate disease uncontrolled by topicals, is the typical territory where dupilumab and similar systemics are considered. The score supports the case; it does not decide alone.
Can I track SCORAD at home?
Approximately. Area estimation and symptom scores are doable; intensity grading takes practice and a reference. Home tracking works best for following your own trend with consistent technique rather than comparing with clinic scores.
Does SCORAD measure itch well?
Itch gets one 0-to-10 line, which many patients feel understates their worst symptom. Dedicated itch scales exist for that reason. SCORAD balances itch against visible disease; when itch dominates, say so separately.
Why does sleep loss count?
Because nighttime itching that fragments sleep is one of eczema heaviest burdens, affecting school, work, and mood. Including it forces the score to reflect lived impact, not just appearance. Treating itch often improves the score fastest.
How much change is meaningful?
Roughly 8 to 10 points is considered a meaningful shift in most analyses, though it scales with baseline severity. In trials, the proportion reaching 50 or 75 percent improvement (SCORAD-50/75) is the standard efficacy readout.