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Dermatology · Allergy and Immunology

Scoring Mastocytosis (SCORMA) Index calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Skin involvement

%

Allowed range: 0–100 %

Percent of the body surface. A solitary mastocytoma counts as 1% per lesion. Diffuse cutaneous mastocytosis is 100%.

Pigmentation or erythema

Score one typical lesion: 0 absent, 1 mild, 2 moderate, 3 severe.

Vesiculation

Score one typical lesion: 0 absent, 1 mild, 2 moderate, 3 severe.

Elevation

Score one typical lesion: 0 absent, 1 mild, 2 moderate, 3 severe.

Darier sign

Score one typical lesion: 0 absent, 1 mild, 2 moderate, 3 severe.

Provoking factors

points

Allowed range: 0–10 points

Visual scale from 0 to 10 for the 3 weeks before the visit. A parent answers when the child is younger than 5 years.

Flushing

points

Allowed range: 0–10 points

Visual scale from 0 to 10 for the 3 weeks before the visit. A parent answers when the child is younger than 5 years.

Diarrhoea

points

Allowed range: 0–10 points

Visual scale from 0 to 10 for the 3 weeks before the visit. A parent answers when the child is younger than 5 years.

Pruritus

points

Allowed range: 0–10 points

Visual scale from 0 to 10 for the 3 weeks before the visit. A parent answers when the child is younger than 5 years.

Localized bone pain

points

Allowed range: 0–10 points

Visual scale from 0 to 10 for the 3 weeks before the visit. A parent answers when the child is younger than 5 years.

Result

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Primary source

Heide R et al. Clinical scoring of cutaneous mastocytosis. Acta Derm Venereol. DOI: 10.1080/00015550152572912. PMID: 11720175. Figure 1 and the methods print SCORMA = A/5 + 5B + 2C/5. A is the percent of skin involved (0–100). A solitary mastocytoma counts as 1% per lesion, and diffuse cutaneous mastocytosis is 100%. B is one typical lesion scored 0–3 on each of pigmentation/erythema, vesiculation, elevation, and Darier sign (absent, mild, moderate, severe). The four items sum to at most 12. C is five 0–10 visual scales from the 3 weeks before the visit: provoking factors, flushing, diarrhoea, pruritus, and localized bone pain, at most 50. Parents complete the scales when the child is younger than 5 years. The practical formula equalizes each part to 20 and then weights lesion activity by 3, which is A/5 + 5B + 2C/5. The index can run from 0 to 100. The sentence that B ranges from 1 to 12 describes the panel they observed; Figure 1 scores absent as 0. Table I gives means, not a single patient’s C. Patient 9, extent 100 and intensity 10.6, has mean SCORMA 78.6, which is the printed formula when C is 14. The paper does not print risk categories. (2001)

Scope: People with cutaneous mastocytosis. A is body-surface percent, B is one representative lesion, and C is the five symptoms over the prior 3 weeks.

Last reviewed 2026-10-17

Professional use only

For qualified clinicians. Independently verify inputs, calculations, source guidance, and applicability before any clinical action. This calculator does not replace clinical judgment.

Source: Heide R et al. Clinical scoring of cutaneous mastocytosis. Acta Derm Venereol. DOI: 10.1080/00015550152572912. PMID: 11720175. Figure 1 and the methods print SCORMA = A/5 + 5B + 2C/5. A is the percent of skin involved (0–100). A solitary mastocytoma counts as 1% per lesion, and diffuse cutaneous mastocytosis is 100%. B is one typical lesion scored 0–3 on each of pigmentation/erythema, vesiculation, elevation, and Darier sign (absent, mild, moderate, severe). The four items sum to at most 12. C is five 0–10 visual scales from the 3 weeks before the visit: provoking factors, flushing, diarrhoea, pruritus, and localized bone pain, at most 50. Parents complete the scales when the child is younger than 5 years. The practical formula equalizes each part to 20 and then weights lesion activity by 3, which is A/5 + 5B + 2C/5. The index can run from 0 to 100. The sentence that B ranges from 1 to 12 describes the panel they observed; Figure 1 scores absent as 0. Table I gives means, not a single patient’s C. Patient 9, extent 100 and intensity 10.6, has mean SCORMA 78.6, which is the printed formula when C is 14. The paper does not print risk categories. (2001)

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Clinical inputs

Skin involvement (%)Accepted range: 0 to 100
Pigmentation or erythema
Vesiculation
Elevation
Darier sign
Provoking factors (points)Accepted range: 0 to 10
Flushing (points)Accepted range: 0 to 10
Diarrhoea (points)Accepted range: 0 to 10
Pruritus (points)Accepted range: 0 to 10
Localized bone pain (points)Accepted range: 0 to 10

Primary source

Heide R et al. Clinical scoring of cutaneous mastocytosis. Acta Derm Venereol. DOI: 10.1080/00015550152572912. PMID: 11720175. Figure 1 and the methods print SCORMA = A/5 + 5B + 2C/5. A is the percent of skin involved (0–100). A solitary mastocytoma counts as 1% per lesion, and diffuse cutaneous mastocytosis is 100%. B is one typical lesion scored 0–3 on each of pigmentation/erythema, vesiculation, elevation, and Darier sign (absent, mild, moderate, severe). The four items sum to at most 12. C is five 0–10 visual scales from the 3 weeks before the visit: provoking factors, flushing, diarrhoea, pruritus, and localized bone pain, at most 50. Parents complete the scales when the child is younger than 5 years. The practical formula equalizes each part to 20 and then weights lesion activity by 3, which is A/5 + 5B + 2C/5. The index can run from 0 to 100. The sentence that B ranges from 1 to 12 describes the panel they observed; Figure 1 scores absent as 0. Table I gives means, not a single patient’s C. Patient 9, extent 100 and intensity 10.6, has mean SCORMA 78.6, which is the printed formula when C is 14. The paper does not print risk categories. (2001)