| / English Dictionary |
ALLERGIC REACTION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
Synonyms:
allergic reaction; allergy
Classified under:
Nouns denoting stable states of affairs
Hypernyms ("allergic reaction" is a kind of...):
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)
Hyponyms (each of the following is a kind of "allergic reaction"):
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)
Context examples:
Dermatitis caused by an allergic reaction to ingested food.
(Dermatitis due to Food taken Internally, NCI Thesaurus)
Such nondisclosure can cause difficulties in identifying flavor-related adverse events, e.g. allergic reactions from common allergens such as menthol, lemon oil, or peppermint oil.
(Flavor Excipient, NCI Thesaurus)
In adults, the foods that most often trigger allergic reactions include fish, shellfish, peanuts, and tree nuts, such as walnuts.
(Food Allergy, NIH: National Institute of Allergy and Infectious Diseases)
It may also be caused by food poisoning, allergic reactions, or reactions to certain medicines or foods.
(Gastroenteritis, NCI Dictionary)
It is released from some types of white blood cells during allergic reactions.
(Histamine, NCI Dictionary)
In addition fexofenadine may also inhibit the late-phase allergic reaction by acting on leukotrienes or prostaglandins, or by producing an anti-platelet activating factor effect.
(Fexofenadine, NCI Thesaurus)
A type of immune cell that has granules (small particles) with enzymes that are released during infections, allergic reactions, and asthma.
(Eosinophil, NCI Dictionary)
Dermatitis caused by an allergic reaction to an unspecified ingested substance.
(Dermatitis due to Unspecified Substance Taken Internally, NCI Thesaurus)
In addition, emedastine may also inhibit the late-phase allergic reaction mediated through leukotrienes or prostaglandins, or by producing an anti-platelet activating factor effect.
(Emedastine, NCI Thesaurus)
Any agent that binds to the histamine H1 receptor, thereby antagonizing histamine mediated allergic reactions, such as bronchoconstriction, vasodilation and up-regulated capillary permeability.
(Histamine-1 Receptor Antagonist, NCI Thesaurus)
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