Atopy vs. Allergy

Atopynoun

(medicine) A hereditary disorder marked by the tendency to develop localized immediate hypersensitivity reactions to allergens such as pollen, food etc and is manifested by hay fever, asthma, or similar allergic conditions; generally considered to be caused by the interaction of environmental and genetic factors.

Atopynoun

A person suffering from atopic syndrome; a case of atopy.

Atopynoun

an allergic reaction that becomes apparent in a sensitized person only minutes after contact

Atopy

Atopy is the tendency to produce an exaggerated immunoglobulin E (IgE) immune response to otherwise harmless substances in the environment. Allergic diseases are clinical manifestations of such inappropriate, atopic responses.Atopy may have a hereditary component, although contact with the allergen or irritant must occur before the hypersensitivity reaction can develop (characteristically after re-exposure).

Allergynoun

A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma.

Allergynoun

(pathology) Any condition of hypersensitivity to a substance.

Allergynoun

Altered susceptibility to a first treatment as exhibited in reaction to a subsequent one.

Allergynoun

(informal) An antipathy, as toward a person or activity.

Allergynoun

hypersensitivity to a particular substance.

Allergynoun

hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity

Allergy

Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.