Differentiating<unk>  from a fish allergy can be difficult, as both present with similar symptoms. In<unk> , blood tryptase is generally normal, while in an allergic reaction, it is elevated.
Scombroid food poisoning
Allergy
Chinese alchemical elixir poisoning
Fish allergy
Ciguatera fish poisoning
Loch Maree Hotel botulism poisoning
Shellfish poisoning
Tin poisoning