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Global Acne Grading System44
| Location (L) | Clinical assessment (A) | Local score | Global score |
|---|---|---|---|
| Forehead = 2 | 0 = no lesion | Local score = L × A | 0 = None |
| Right cheek = 2 | 1 = ≥ 1 comedo | sum of local scores = global score | 1–18 = mild acne |
| Left cheek = 2 | 2 = ≥ 1 papule | 19–30 = moderate acne | |
| Nose = 1 | 3 = ≥ 1 pustule | 31–38 = severe acne | |
| Chin = 1 | 4 = ≥ 1 nodule | >39 = very severe acne | |
| Chest/upper back = 3 |
