Table 2.

Scoring system for skin reaction.

Reaction	Irritation Score
Erythema and eschar formation
No erythema	0
Very slight erythema (barely perceptible)	1
Well-defined erythema	2
Moderate erythema	3
Severe erythema (beet-redness)	4
Oedema formation
No oedema	0
Very slight oedema (barely perceptible)	1
Well-defined oedema (edges of area well-defined by definite raising)	2
Moderate oedema (raised approximately 1 mm)	3
Severe oedema (raised more than 1 mm an extending beyond exposure area)	4
Maximal possible score for irritation	8