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Evaluation of HFS and TN.
| HFS | |
| Grade | Definition |
| E0 | Complete disappearance of spasm |
| E1 | Occasional slight spasm |
| E2 | Moderate spasms, apparently persisting |
| E3 | Not cured |
| TN | |
| Grade | |
| BNII | No trigeminal pain, no medication |
| BNIII | Occasional pain, not requiring medication |
| BNIIII | Some pain, adequately controlled with medication |
| BNIIV | Some pain, not adequately controlled with medication |
| BNIV | Severe pain/no pain relief |
