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Table 3 Urticaria Activity Scale

From: Urticaria: recommendations from the Italian Society of Allergology, Asthma and Clinical Immunology and the Italian Society of Allergological, Occupational and Environmental Dermatology

1Mild (< 20 wheals/24 h)Mild (present but not bothersome)
2Moderate (20–50 wheals/24 h)Moderate (bothersome but not interfering with daily activities and sleep)
3Severe (> 50 wheals/24 h)Severe (interfering with daily activities and sleep)