| Dysphagia | Symptom |
| Grade 0 | Able to swallow all solid foods without difficulty |
| Grade 1 | Able to swallow solid foods with some difficulty |
| Grade 2 | Able to swallow soft or semi solid foods only |
| Grade 3 | Able to swallow liquefied foods and liquids only |
| Grade 4 | Unable to swallow liquids/saliva |
