Answer: Most patients with botulism present with cranial nerve dysfunction; difficulty swallowing, dysarthria, blurred vision and diplopia are among the most common early complaints.
Step-by-step explanation:
Weakness of the upper extremities usually follows these problems related to cranial nerves, followed by lower extremity weakness. Respiratory failure may occur at any time because of upper airway weakness, inability to handle secretions, or weakness of the diaphragm or parasternal intercostal musculature. Botulism itself produces constipation, but the patient may initially complain of diarrhea, nausea, and vomiting after ingestion of improperly prepared or preserved food.