What toxin is histamine poisoning?

Histamine poisoning, also known as scombroid poisoning, occurs when certain fish, such as tuna and mackerel, are improperly stored and begin to spoil. The spoilage leads to the production of high levels of histamine due to bacterial action on the fish's flesh, which can cause symptoms like flushing, sweating, and gastrointestinal distress upon consumption. It's important to note that histamine itself is not a traditional toxin but rather a chemical that can cause toxic effects when present in excessive amounts. Proper handling and storage of fish are crucial to prevent this type of poisoning.