| Grade | Clinical Features |
|---|---|
| 1 | 1-10 papules (diameter≦5㎜) |
| 2 | 11-30 papules |
| 3 | 31- papules, 1-10 nodules (diameter≧5㎜) |
| 4 | 11-20 nodules, mild progressive scarring |
| 5 | 21-30 nodules, moderate progressive scarring |
| 6 | 31- nodules, severe progressive scarring, blennorrhea |