Anaphylactic shock

Anaphylactic shock (anaphylaxis, anaphylactic shock) is a kind of strong multi-organ involvement syndrome that occurs in a short period of time through the immune mechanism after certain external antigenic substances enter the sensitized body. The performance and degree of anaphylactic shock vary greatly depending on the body's reactivity, the amount of antigen entering, and the pathway. It usually occurs suddenly and violently, and if not handled in time, it can often be life-threatening.