Allergy and Immunology

Urticaria Activity Score calculator

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

Clinical inputs

Wheals in 24 hours

Itch in 24 hours

Result

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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: Zuberbier T et al. The EAACI/GA²LEN/EDF/WAO guideline for the definition, classification, diagnosis and management of urticaria. Allergy. DOI: 10.1111/all.13397. PMID: 29336054. Table 7. Wheals over 24 hours: none 0, mild (<20) 1, moderate (20–50) 2, intense (>50 or large confluent areas) 3. Pruritus: none 0, mild (present but not annoying or troublesome) 1, moderate (troublesome but does not interfere with normal daily activity or sleep) 2, intense (severe enough to interfere with normal daily activity or sleep) 3. The daily sum is 0–6. The weekly UAS7 is the sum of seven daily scores, maximum 42. (2018)

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Clinical inputs

Wheals in 24 hours
Itch in 24 hours

Primary source

Zuberbier T et al. The EAACI/GA²LEN/EDF/WAO guideline for the definition, classification, diagnosis and management of urticaria. Allergy. DOI: 10.1111/all.13397. PMID: 29336054. Table 7. Wheals over 24 hours: none 0, mild (<20) 1, moderate (20–50) 2, intense (>50 or large confluent areas) 3. Pruritus: none 0, mild (present but not annoying or troublesome) 1, moderate (troublesome but does not interfere with normal daily activity or sleep) 2, intense (severe enough to interfere with normal daily activity or sleep) 3. The daily sum is 0–6. The weekly UAS7 is the sum of seven daily scores, maximum 42. (2018)

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