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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 ?
It is common in the spring and summer and is a type of 'atopy' which is due to allergens, such as pollen, penetrating the skin.
Oral CD is also referred to as orofacial granulomatosis (OFG) andcanoccur alone or incombination with CD inthe gut.OFG is unique from CD in that80% of patients also have atopy (hayfever, asthma).
Dermatologists suggest that persons with a known history of atopy or allergic rhinitis are more prone to such complaints.
'Medically we refer to this as atopic or to have atopy, which means that such people produce more antibodies than others.
There have been studies in the past which have reported the incidence of various allergies in India [1-4] and a previous study showed an incidence of approximately 29% atopy in the Indian population.
Mothers whose children went on to have atopy did not differ in their 25(OH)D levels at 15 weeks' gestation (mean 58.4 nmo1/L vs.
Details about age, gender, personal or family history of atopy (nasobronchial allergy, asthma, and childhood eczema), use of cosmetics and its duration, onset, duration, and distribution of dermatitis were noted.
Increased incidence of atopy, increased drug hypersensitivity reactions, premature skin wrinkles caused by water, and vasculitis are the skin findings, especially in vitamin deficiencies (zinc, protein, and essential fatty acids).
Altered immune development and increased likelihood of allergy, atopy, and asthma are included as short-term CS risks.
Adenoidectomy and tonsillectomy are commonly performed in childhood; however these procedures might cause an immunologic imbalance and increase atopy or allergic diseases [2].
Keywords: Aeroallergens, Allergic asthma, Bronchial asthma, Atopy, Allergen sensitisation.
"When external parasites are off the list, atopy or food allergy come next," says Dr.