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Dizziness grading system for acoustic neuromas.
| Grade | Descriptions |
|---|---|
| Ⅰ | No dizziness or imbalance |
| Ⅱ | Occasional and mild dizziness or imbalance |
| Ⅲ | Persistent or moderate vertigo or imbalance |
| Ⅳ | Persistent and severe dizziness or imbalance, disturbing daily life |
