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Kennedy classification of symptoms [25].
| General Discomfort | Difficulty Concentrating |
|---|---|
| Fatigue | Fullness of the Head |
| Headache | Blurred vision |
| Eye strain | Dizziness with eyes open |
| Difficulty focusing | Dizziness with eyes closed |
| Salivation increasing | Vertigo |
| Sweating | Stomach awareness |
| Nausea | Burping |
