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allergic reaction

   Also found in: Medical, Financial, Encyclopedia, Wikipedia, Hutchinson 0.20 sec.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.allergic reactionallergic reaction - hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
allergy
food allergy - allergic reaction to a substance ingested in food
atopic allergy, atopy, immediate allergy, type I allergic reaction - an allergic reaction that becomes apparent in a sensitized person only minutes after contact
serum disease, serum sickness - a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum
delayed allergy, type IV allergic reaction - an allergic reaction that becomes apparent only hours after contact
hypersensitivity reaction - an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock


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I had to spend a night in the hospital because of an allergic reaction.
GIVE BACK TO COMMUNITY THROUGH SERVICE by Daily News (Los Angeles, CA)
Allergic reaction is defined as 'an event deemed by an immunologist to be allergic in nature that cannot be attributed to any other patient-related factors and required cessation of the antibiotic thought to be responsible for the reaction.
Evidence for intravenous antibiotic therapy in the community by Kralik, Debbie / Australian Nursing Journal
He is recovering from a severely wounded hand, shell shock, and an allergic reaction to morphine that has kept him from thinking clearly for days.
Double Cross Blind by Purucker, Mary / Kliatt
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