Symptoms develop within minutes to hours of ingestion
Typically neurologic symptoms only: Paresthesias, dizziness, ataxia. May progress to dysphagia and/or respiratory failure. 
Report any suspect cases to local department of health
Paralytic shellfish poisoning
Toxins
Neurotoxic shellfish poisoning
Ciguatera
Acetaminophen toxicity
Scombroid
Ipecac toxicity
Tetrodotoxin 