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Gradation of neurological symptoms
| Score | Symptoms |
|---|---|
|
Grade 1 |
Local paraesthesia (anesthesia, tingling, stinging) |
|
Grade 2 |
Hypersecretion (sweat, saliva) |
|
Grade 3 |
Impaired vision, hearing, speech, dysphagia |
|
Grade 4 |
Bilateral ptosis |
|
Grade 5 |
Severe dyspnea |
| Grade 6 | Severe consciousness disorders, motor and respiratory paralysis |
