| Type | Score |
| Minor ulcer | 1 |
| Major ulcer | 2 |
| Herpetiform ulcer | 3 |
| Number of ulcers/attack |
|
| 1 - 3 | 1 |
| 4 - 6 | 2 |
| 7 - 9 | 3 |
| 9 - 12 | 4 |
| More than 12 | 5 |
| Duration of the attack |
|
| 1 - 4 days | 1 |
| 5 - 8 days | 2 |
| 9 - 12 days | 3 |
| More than 12 days | 4 |
| Frequency (attack/date) |
|
| 0 - 2 weeks | 5 |
| 3 - 4 weeks | 4 |
| 5 - 6 weeks | 3 |
| 7 - 8 weeks | 2 |
| More than 8 weeks | 1 |
| Associated symptoms |
|
| Uncomfortable | 1 |
| Painful but not interfere with eating or swallowing | 2 |
| Interfere with solid feeding | 3 |
| Interfere with liquid feeding | 4 |