Table 1:

Grading severity of acne^2,3

Grade	Severity	Clinical findings
I	Mild	Open and closed comedones with few inflammatory papules and pustules
II	Moderate	Papules and pustules, mainly on face
III	Moderately severe	Numerous papules and pustules, and occasional inflamed nodules, also on chest and back
IV	Severe	Many large, painful nodules and pustules