| 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 |