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SCORAD

Measures atopic dermatitis severity by combining extent, lesion intensity and subjective symptoms (itch and sleep loss). Created by the European Task Force on Atopic Dermatitis.

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Method · Limits of application

SCORAD/ETFAD 1993: extent/5+3.5 intensity+symptoms; objective SCORAD without C; Oranje 2007 thresholds

SCORAD measures atopic dermatitis severity and depends on assessment of signs, extent and subjective symptoms. The original development included trained raters and does not establish the disease diagnosis from the total. Objective SCORAD, the full index and later cutoffs require their own definitions and sources.

Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Extent (A): affected surface area using the rule of nines · %
Erythema
Edema/papules
Oozing/crusts
Excoriation
Lichenification
Xerosis (on unaffected skin)
Itching over the last 3 days (0 to 10)
Sleep loss over the last 3 days (0 to 10)

4/4 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

SCORAD = A/5 + 7B/2 + C; A = extent (0–100%), B = sum of 6 intensities (0–18), C = itch + sleep loss (0–20). Maximum: 103.

Objective SCORAD = A/5 + 7B/2 (Maximum: 83).

References

Identifier: scorad

Original clinical content: Brazilian Portuguese.

Method version

SCORAD/ETFAD 1993: extent/5+3.5 intensity+symptoms; objective SCORAD without C; Oranje 2007 thresholds

scorad@native-2026-10-05+102b2ba5ebc2

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (4)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Extent (A): affected surface area using the rule of nines: 20 %
Erythema: 1 mild
Edema/papules: 1 mild
Oozing/crusts: 0 absent
Excoriation: 1 mild
Lichenification: 1 mild
Xerosis (on unaffected skin): 1 mild
Itching over the last 3 days (0 to 10): 4
Sleep loss over the last 3 days (0 to 10): 2

{
  "area": 20,
  "eritema": "1",
  "edema": "1",
  "exsudacao": "0",
  "escoriacao": "1",
  "liquen": "1",
  "xerose": "1",
  "prurido": 4,
  "sono": 2
}

Expected result

{
  "scorad": 27.5,
  "objetivo": 21.5,
  "b": 5
}

Actual result

{
  "scorad": 27.5,
  "objetivo": 21.5,
  "b": 5
}

Case 2

reference-002

Inputs

Extent (A): affected surface area using the rule of nines: 10 %
Erythema: 1 mild
Edema/papules: 0 absent
Oozing/crusts: 0 absent
Excoriation: 0 absent
Lichenification: 0 absent
Xerosis (on unaffected skin): 1 mild
Itching over the last 3 days (0 to 10): 2
Sleep loss over the last 3 days (0 to 10): 0

{
  "area": 10,
  "eritema": "1",
  "edema": "0",
  "exsudacao": "0",
  "escoriacao": "0",
  "liquen": "0",
  "xerose": "1",
  "prurido": 2,
  "sono": 0
}

Expected result

{
  "scorad": 11
}

Actual result

{
  "scorad": 11,
  "objetivo": 9,
  "b": 2
}

Case 3

reference-003

Inputs

Extent (A): affected surface area using the rule of nines: 60 %
Erythema: 2 moderate
Edema/papules: 2 moderate
Oozing/crusts: 2 moderate
Excoriation: 2 moderate
Lichenification: 2 moderate
Xerosis (on unaffected skin): 2 moderate
Itching over the last 3 days (0 to 10): 8
Sleep loss over the last 3 days (0 to 10): 7

{
  "area": 60,
  "eritema": "2",
  "edema": "2",
  "exsudacao": "2",
  "escoriacao": "2",
  "liquen": "2",
  "xerose": "2",
  "prurido": 8,
  "sono": 7
}

Expected result

{
  "scorad": 69,
  "objetivo": 54
}

Actual result

{
  "scorad": 69,
  "objetivo": 54,
  "b": 12
}

Case 4

reference-004

Inputs

Extent (A): affected surface area using the rule of nines: 25 %
Erythema: 1 mild
Edema/papules: 1 mild
Oozing/crusts: 0 absent
Excoriation: 1 mild
Lichenification: 0 absent
Xerosis (on unaffected skin): 1 mild
Itching over the last 3 days (0 to 10): 4
Sleep loss over the last 3 days (0 to 10): 2

{
  "area": 25,
  "eritema": "1",
  "edema": "1",
  "exsudacao": "0",
  "escoriacao": "1",
  "liquen": "0",
  "xerose": "1",
  "prurido": 4,
  "sono": 2
}

Expected result

{
  "scorad": 25
}

Actual result

{
  "scorad": 25,
  "objetivo": 19,
  "b": 4
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

README

Local installation

Code license: Apache-2.0

Guidelines and conditions

This repository’s license applies to the code. Third-party instruments, questionnaires, data and models remain subject to their owners’ conditions.

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.