Urticaria Severity Score - Medical Algorithm

Kaplan et al evaluated clinical findings to determine the severity of urticaria.

Patient selection: chronic urticaria

Parameters:

(1) number of hives

(2) size of largest hive in cm

(3) pruritis (itching)

(4) severity of erythema

(5) interference with sleep

(6) interference with daily activities

Parameter	Finding	Points
number of hives	0 (none)	0
	1 to 6 (mild)	1
	7 to 12 (moderate)	2
	> 12 (severe)	3
size of largest hive	none	0
	< 1.25 cm	1
	1.25 to 2.5 cm	2
	> 2.5 cm	3
pruritis severity	none	0
	mild	1
	moderate	2
	severe	3
erythema severity	none	0
	mild	1
	moderate	2
	severe	3
interference with sleep	none	0
	mild	1
	moderate	2
	severe	3
interference with daily activities	none	0
	little	1
	some, moderate	2
	marked, significant impact	3

total score =

= SUM(points for all 6 parameters)

Interpretation:

• minimum score: 0

• maximum score: 18

• The higher the score the more severe the urticaria.

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Scoring System of Kaplan et al for Urticaria Severity