Table 4.

Goodman and Baron’s quantitative global acne scarring system

Grade or type	Number of lesions 1 (1–10)	Number of lesions 2 (11–20)	Number of lesions 3 (>20)
(A) Milder scarring (1 point each) Macular erythematous pigmented mildly atrophic dish-like	1 point	2 points	3 points
(B) Moderate scarring (2 points each) Moderately atrophic, dish like punched out with shallow bases small scars (<5 mm) shallow but broad atrophic areas	2 points	4 points	6 points
(C) Severe scarring (3 points each) Punched out with deep but normal bases, small scars (<5 mm) punched out with deep but abnormal bases, small scars (<5 mm) linear or troughed dermal scarring deep, broad atrophic areas	3 points	6 points	9 points
(D) Hyperplastic Papular scars keloidal/hypertrophic scars	2 points area <5 mm 6 points	4 points Area 5–20 cm2 12 points	6 points area >20 cm2 18 points