Table 3. Clinical signs and symptoms reported by patients with food-borne botulism, Italy, 1986–2015 (n=421).
| Clinical sign/symptom | Number of cases | % of cases |
|---|---|---|
| Headache | 28 | 6.6 |
| Double vision | 298 | 70.6 |
| Drooping upper eyelid | 43 | 10.2 |
| Dilation of the pupil | 88 | 20.9 |
| Difficulty in swallowing | 304 | 72.0 |
| Dry mouth | 278 | 65.9 |
| Facial palsy | 28 | 6.6 |
| Respiratory failure | 75 | 17.8 |
| Constipation | 209 | 49.5 |
| Nausea | 145 | 34.4 |
| Vomiting | 157 | 37.2 |
| Abdominal pain | 6 | 1.4 |
| Diarrhoea | 40 | 9.5 |
| Urinary retention | 20 | 4.7 |
| Coma | 9 | 2.1 |
| Death | 17 | 4.0 |