Table 3. Urticaria Activity Score(UAS)

Score	Number of wheals	Intensity of pruritus
0	None	None
1	< 20 per 24 hours	Mild(present but not troublesome)
2	20-50 per 24 hours	Moderate(troublesome but does not interfere with normal daily activity or sleep)
3	> 50 per 24 hours	Severe(interferes with normal daily activity or sleep)