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Allergic reaction

   Also found in: Dictionary/thesaurus, Financial, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
allergic reaction
n.
A local or generalized reaction of an organism to internal or external contact with a specific allergen to which the organism has been previously sensitized.
Allergic reaction
An inappropriate or exaggerated genetically determined reaction to a chemical that occurs only on the second or subsequent exposures to the offending agent, after the first contact has sensitized the body.
Mentioned in: Dermatitis, Eyelid Disorders
allergic reaction,
n aggravated immune system response to a variety of environmental and other substances, both chemical or organic. Reactions may be mild to life-threatening and include urticaria, eczema, dyspnea, bronchospasm, diarrhea, rhinitis, sinusitis, laryngospasm, and anaphlaxis.
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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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