Anaphylactic shock

/ˌanɐfɪlˈaktɪk ʃˈɒk/

/ˌænɐfɪlˈæktɪk ʃˈɑːk/

Anaphylactic shock

a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure

Examples

1. Hundreds of people in the US die every year from anaphylactic shock.

2. But when that tentacle touches you and wraps around your neck and your arms, you go into anaphylactic shock.

3. One sting is enough to send an allergic person into anaphylactic shock.

4. Further tests revealed she was in anaphylactic shock, or at least they presume that.