anaphylactic shock
US /ˌæn.ə.fɪˈlæk.tɪk ˈʃɑːk/
UK /ˌæn.ə.fɪˈlæk.tɪk ˈʃɑːk/
1.
a severe, potentially life-threatening allergic reaction that can occur very quickly, characterized by a sudden drop in blood pressure, difficulty breathing, and swelling of the face, throat, and tongue
:
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After being stung by a bee, he went into anaphylactic shock and needed immediate medical attention.
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People with severe allergies often carry an epinephrine auto-injector to treat anaphylactic shock.