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Parents of children with a history of the potentially life-threatening allergic reaction anaphylaxis often ignore precautionary labels on foods because they find them unhelpful and confusing, research from ...
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One reason why obese children and teenagers are more likely to have hard-to-control asthma and allergies may be vitamin D deficiency, a new study finds. Results of the study will be presented Tuesday at The Endocrine Society's ...
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Seeking to improve the lives of sickle cell anemia sufferers around the world, researchers from the La Jolla Institute for Allergy and Immunology, the Dana-Farber/Children's Hospital Cancer Center in Boston and the BloodCenter ...
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An intervention consisting of clinician education coupled with personalized audit and feedback about antibiotic prescribing improved adherence to prescribing guidelines for common pediatric bacterial acute respiratory tract ...
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Researchers at the University of California, San Diego School of Medicine and colleagues report that the herpes simplex virus type-1 (HSV-1), which affects an estimated 50 to 80 percent of all American adults, exploits an ...
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A Yale-led team of researchers has identified the protein that controls inflammation and the urge to itch in people who suffer from contact dermatitis due to exposure to poison ivy and other allergens. The ...
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Untreated HIV infection destroys a person's immune system by killing infection-fighting cells, but precisely when and how HIV wreaks this destruction has been a mystery until now. New research by scientists at the National ...
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(Medical Xpress)—A new study has begun which will, for the first time, identify how factors like exercise and stress may change how much peanut can cause an allergic reaction in the UK population.
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(Medical Xpress)—The ability to predict and implement preventative measures for common diseases, such as diabetes and asthma, even before a baby is born, is one step closer following a breakthrough by University of Sydney ...
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More evidence has surfaced that supports the war on smoking, especially if smokers have an infant in their household. A study published today in the June issue of Annals of Allergy, Asthma & Immunology, the scientific journa ...
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In a bid to save £10 million a year the British Treasury is replacing copper–nickel five and ten pence coins with new nickel-plated steel versions. However, while no UK health assessment has taken place, scientists in ...
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The human immune system is remarkably efficient, but sometimes its attack is misdirected, leading to allergies, autoimmune diseases and rejection of transplant organs and therapeutic drugs. Current immune suppressants have ...
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Giving double doses of the antiviral drug oseltamivir, or Tamiflu, offers no clinical or virological advantages over a standard dose for patients admitted to hospital with severe influenza infection, according to a randomised ...
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An allergy is a hypersensitivity disorder of the immune system. Allergic reactions occur when a person's immune system reacts to normally harmless substances in the environment. A substance that causes a reaction is called an allergen. These reactions are acquired, predictable, and rapid. Allergy is one of four forms of hypersensitivity and is formally called type I (or immediate) hypersensitivity. Allergic reactions are distinctive because of excessive activation of certain white blood cells called mast cells and basophils by a type of antibody called Immunoglobulin E (IgE). This reaction results in an inflammatory response which can range from uncomfortable to dangerous.
Mild allergies like hay fever are very common in the human population and cause symptoms such as red eyes, itchiness, and runny nose, eczema, hives, hay fever, or an asthma attack. Allergies can play a major role in conditions such as asthma. In some people, severe allergies to environmental or dietary allergens or to medication may result in life-threatening reactions called anaphylaxis. Food allergies, and reactions to the venom of stinging insects such as wasps and bees are often associated with these severe reactions.
A variety of tests exist to diagnose allergic conditions. These include placing possible allergens on the skin and looking for a reaction such as swelling. Blood tests can also be done to look for an allergen-specific IgE.
Treatments for allergies include avoiding known allergens, use of medications such as anti-histamines that specifically prevent allergic reactions, steroids that modify the immune system in general, and medications such as decongestants that reduce the symptoms. Many of these medications are taken by mouth, though epinephrine, which is used to treat anaphylactic reactions, is injected. Immunotherapy uses injected allergens to desensitize the body's response.
This text uses material from Wikipedia licensed under CC BY-SA
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