Allergy Definition

The definition of allergy Allergy occurs when a person reacts to substances in the environment that are harmless to most people.

Allergy definition. The allergic reaction is misguided in that these foreign substances are usually harmless. Adverse drug reactions ADRs. Allergens can include aeroallergens such as dust mite mold and tree weed and grass pollen as well as food allergens such as milk egg soy wheat nut or fish proteins.

Theyre thought to affect more than 1 in 4 people in the UK at some point in their lives. It is estimated that 60 million Americans or more than one in every five people suffer from some form of allergy with similar proportions. Allergy definition an abnormal reaction of the body to a previously encountered allergen introduced by inhalation ingestion injection or skin contact often manifested by itchy eyes runny nose wheezing skin rash or diarrhea.

ălər-jē A condition in which exposure to a particular substance or environmental influence such as pollen certain foods or sunlight causes an abnormal physiological reaction. The reaction may include difficulty in breathing sneezing skin rashes and in severe cases shock or death. A misguided reaction to foreign substances by the immune system the body system of defense against foreign invaders particularly pathogens the agents of infection.

An allergy is a reaction the body has to a particular food or substance. A condition in which exposure to a substance such as pollen latex animal dander or a particular food or drug causes an overreaction by the immune system that results in symptoms such as sneezing itching rash and difficulty breathing or swallowing. The classification of allergic and hypersensitivity diseases was established by the European Academy of Allergy and Clinical Immunology EAACI and the World Allergy Organization WAO in 2004 1.

Some allergies go away as a child gets older although many are lifelong. These substances are known as allergens and are found in dust mites pets pollen insects ticks moulds foods and some medications. The substances that trigger allergy are called allergen.

Definition Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances. Allergy 의미 정의 allergy의 정의. Allergy is an international journal with contributors and readers from.