Anaphylactic shock and Anaphylaxis

Anaphylactic shock noun - 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.

Anaphylaxis and anaphylactic shock are semantically related. In some cases you can use "Anaphylaxis" instead a noun phrase "Anaphylactic shock".

Anaphylaxis noun - Hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance.

Anaphylactic shock and anaphylaxis are semantically related. Sometimes you can replace phrase "Anaphylactic shock" with "Anaphylaxis", this terms are similar.