Botulinum

Food poisoning from canned spinach produced a clinical picture suggested in a bulbar paresis.
Eye symptoms, ptosis, double vision, blurred vision.
Difficulty in swallowing and breathing, choking sensation; weakness and uncertainty in walking, "blind staggers", dizziness, thickening of speech. Cramping pain in stomach.
Mask-like expression of face, due to weakness of facial muscles. Severe constipation.