| Score | Change in the color of lesion | Reduction rate in the color diameter of lesion | Reduction rate in the induration of lesion | Reduction rate of ulcer/crust |
| 4 | Bright red | - | - | - |
| 3 | Red | 0 - 25% | 0 - 25% | 0 - 25% |
| 2 | Dusky red | 25% - 50% | 25% - 50% | 25% - 50% |
| 1 | Dark brown | 50% - 75% | 50% - 75% | 50% - 75% |
| 0 | Light brown | >75%/clearance | >75%/clearance | >75%/clearance |