| Associated signs with warning signs | Number (n) | Frequency (%) |
| Headache | 7 | 11.29 |
| Fever | 4 | 6.45 |
| Asthenia | 20 | 32.25 |
| hypersialorrhea | 2 | 3.22 |
| Dysphagia | 1 | 1.61 |
| Vomiting | 2 | 3.22 |
| Convulsions | 4 | 6.45 |