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 |