Urticaria Activity Score The daily UAS is a sum of the daily Itch Severity Score (0 = none, 1 = mild, 2 = moderate, 3 = severe) and the daily Number of Hives Score (0 = none, 1 = between 1 and 6 hives, 2 = between 7 and 12 hives, 3 = greater than 12 hives), giving a range of 0 to 6 points per day.