Investigator's Global Assessment for acne
| Score | Description | Details |
|---|---|---|
| 0 | Clear | Clear skin with no inflammatory or non-inflammatory lesions |
| 1 | Almost clear | Rare non-inflammatory lesions with no more than one inflammatory lesion |
| 2 | Mild | Greater than grade 1; some non-inflammatory lesions with no more than a few inflammatory lesions (Papules or pustules only, no nodular lesions) |
| 3 | Moderate | Greater than grade 2; up to many non-inflammatory lesions and may have some inflammatory lesions but no more than one small nodular lesion |
| 4 | Severe | Greater than grade 3; up to many non-inflammatory and inflammatory lesions but no more than a few nodular lesions |