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Of, relating to, or caused by a hereditary predisposition to developing allergic reactions, such as hay fever, asthma, or urticaria, after exposure to specific antigens such as pollen, food, and insect venoms.

[From Greek atopiā, unusualness, from atopos, out of the way : a-, not; see a-1 + topos, place.]

at′o·py (ăt′ə-pē) n.


(Physiology) immunol a hereditary tendency to be hypersensitive to certain allergens


(ˈæt ə pi)

allergic hypersensitivity associated with the overproduction of antibody of the IgE type.
[1920–25; < Greek atopía unusualness <átopos unusual]
a•top•ic (eɪˈtɒp ɪk, əˈtɒp-) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atopy - an allergic reaction that becomes apparent in a sensitized person only minutes after contactatopy - an allergic reaction that becomes apparent in a sensitized person only minutes after contact
allergic reaction, allergy - hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity


n. atopía, tipo de alergia considerada de carácter hereditario.
References in periodicals archive ?
Regarding the genetic predisposition, many patients affected by AD have a family history of atopy, such as asthma, food allergies, AD, or hay fever,' he added.
Contract awarded for Atopy natural healing village environment improvement corporation
In order to meet the diagnosis, patients must meet three or more basic features, which include pruritus, typical morphology and distribution, chronic or chronically relapsing dermatitis, and personal or family history of atopy, plus 3 or more of 23 minor criteria such as xerosis, early age of onset, and orbital darkening.
sup][3] Atopy determined by increased level of immunoglobulin E (IgE), was inversely associated with forced expiratory volume in 1 s (FEV[sub]1)/forced vital capacity independent of smoking status.
1% were diagnosed as having asthma and non-asthmatic atopy, respectively.
A Dogs can suffer from seasonal allergies, but we tend to see this as a condition called atopy and the signs are usually different to those in people.
The patient had received no drugs prior to the appearance of the eruption, he exhibited no signs or symptoms of atopy, and his family history was negative for atopy.
Atopic dermatitis (AD) is a common health problem, and the increase in the incidence of atopy has been referred to as alarming by some researchers.
As a result, these nail-biting and thumb-sucking kids have fewer chances to develop atopy, a hyperallergic condition resulting in skin asthma or eczema.
Fever, drugs, atopy 5 cases each (9%) and new clothes 2 cases (4%) observed during the study as the predisposing factors.
Studies report frequency of atopy in AA patients ranging from 1% to 52%.
Because the signs of atopy and food allergy are similar, "The only real way to prove that an animal has AD is to make sure he doesn't have a food allergy, and that involves strict dietary manipulation," says Dr.