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Urticaria Activity Scale
| Score | Wheals | Itching |
|---|---|---|
| 0 | Absent | Absent |
| 1 | Mild (< 20 wheals/24 h) | Mild (present but not bothersome) |
| 2 | Moderate (20–50 wheals/24 h) | Moderate (bothersome but not interfering with daily activities and sleep) |
| 3 | Severe (> 50 wheals/24 h) | Severe (interfering with daily activities and sleep) |
