Allergy skin test for hay fever

Allergy skin test for hay fever

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Credit: ST BARTHOLOMEW'S HOSPITAL, LONDON/SCIENCE PHOTO LIBRARY

Caption: Allergy skin tests for asthma, showing hypodermic syringe used to deliver a small dose of potentially-allergenic substances into the skin. A positive result is indicated by subsequent reddening around the site. The difficulty in breathing that characterizes an asthma attack may be brought on by one or more of a number of stimuli, including allergens such as household dust and pollen, drugs such as aspirin, exertion, emotional strain and some infections. The attacks may be associated with other hypersensitive reactions as hay fever and eczema. Avoidance and desensitization of allergens may reduce attacks.

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Keywords: allergic, allergy, allergy testing, asthma, condition, disorder, healthcare, medical, medicine, testing

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