TABLE 2.

Global acne assessment scale.

Grade	Description
0	Normal, clear skin with no evidence of acne
1	Skin is almost clear, rare inflammatory lesions present, with rare non-inflamed papules (papules must be resolving and maybe hyperpigmented, although not pink-red), requiring no further treatment in investigator’s opinion
2	Some noninflammatory lesions present, with few inflammatory lesions (papules/pustules only; no nodulocystic lesions)
3	Noninflammatory lesions predominate, with multiple inflammatory lesions evident; several to many comedones and papules/pustules, and there may or may not be one small nodulocystic lesion
4	Inflammatory lesions are apparent; many comedones and papules/pustules; there may or may not be a few nodulocystic lesions
5	Highly inflammatory lesions predominate; variable number of comedones; many papules/pustules and nodulocystic lesions