A customer becomes flushed, dizzy, and develops a rash within minutes of eating tuna that was stored improperly. This is most likely which type of toxin illness?

Explanation

Scombroid poisoning is caused by histamine that forms when scombroid fish — tuna, mahi-mahi, mackerel, bonito — are time-temperature abused; flushing, dizziness, and rash come on within minutes, and the histamine is heat-stable, so keeping the fish cold from receiving onward is the only control. Ciguatoxin comes from large predatory reef fish, not tuna, and causes neurological symptoms. Paralytic shellfish poisoning comes from molluscan shellfish, and botulism from Clostridium botulinum toxin in improperly canned food; both cause paralysis, not a rash within minutes.