The population of the small remote far South Atlantic Ocean island of Tristan da Cunha ( 266 permanent, genetically isolated residents ) suffers a high prevalence of atopy and asthma.
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Canine Atopy with dermatitis around the eye created by rubbingSome of the allergens associated with canine AD include pollens of trees, grasses and weeds, as well as molds and House dust mite.
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It closely resembles asthma in symptoms, is correlated with more exposure to cigarette smoke, an older age, less symptom reversibility after bronchodilator administration, and decreased likelihood of family history of atopy.
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"The child feels psychologically like he or she is a handicapped person, " said Tomomi Akagi, director of the Atopy Network, which provides telephone counseling to those with the condition.
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Although atopy has various definitions, in general, it is defined by the presence of elevated levels of total and allergen-specific serum, leading to positive skin-prick tests to common allergens.
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Not all people with asthma are allergic, but most are, and a child who shows evidence of atopy _ meaning predisposed to react to many allergens _ is more likely to develop asthma than others.
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Allergic conjunctivitis is a frequent condition as it is estimated to affect 20 percent of the population on an annual basis and approximately one-half of these people have a personal or family history of atopy.
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Environmental factors are also thought to play a role in the development of atopy, and the'hygiene hypothesis'is one of the models that may explain the steep rise in the incidence of atopic diseases.
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Cha also developed atopy and suffered from atopic dermatitis during her training, mainly due to the poor quality of the air within the hair salon and the frequent exposure of cosmetic and hair products to her skin.
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Risk Factors for asthma in children include : Babies born too early, born by C-section, Having Atopy, Allergens, Exposure to smoke and pollution, having a parent who has Asthma, and genetics.
