Last updated:01-07-2009
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Definition and causes

Allergy is a hypersensitivity to various substances. This means that an allergic person reacts to things in the environment, which other people usually do not react. Usually you are allergic to things that we are in close contact with in everyday life. In principle, one can be allergic to everything, but there are certain things that are frequent causes allergic reactions. These are called allergens and include:


  • Pollen
  • Food (mainly milk, nuts and apples)
  • Insect Plugs
  • Scaly fur animals
  • Husstøvmider
  • Pharmaceuticals (penicillin, patch, iodine)
  • Nickel

Allergy is due to the body's immune system to react to substances that are usually harmless (allergens). Normally, the immune system ready to respond to bacteria and viruses, so we are protected from disease. In allergy, there has been a mistake, so that the immune system reacts to harmless substances in the environment.


Symptoms of allergy

Allergies may prove in many ways, but usually seen as:


  • Hay fever
  • Asthma
  • Eczema
  • Hives
An allergic reaction can occur immediately after exposure to an allergen (immediate reaction) or can be hours to days after exposure (late reaction). You usually get symptoms from the part of the body, which comes into contact with allergens gene. In rare cases can cause a serious life-threatening condition called anaphylactic shock. Her body reacts veins to expand so that blood pressure decreases. In those circumstances, agencies


Precautions and diagnosis

If you are experiencing these symptoms should go to his own doctor to be provided for allergies. As far as possible, you should avoid contact with the allergen that triggers symptoms. If you have experienced anaphylactic shock, you should be extra careful not to be exposed to allergens gene and if one example. are allergic to bee-sting, you should always have the summer with a syringe adren


The doctor may sometimes make the diagnosis solely on the typical medical history. There may also make a skin prick test, which suffered drops of the most common allergens on the skin under his arm. Then dots, a small hole in the skin, where the droplets are. This introduces a little bit of all genes in the skin. If you are allergic to one of most genes, there will be temporary itching, redness and a small h &


Treatment of allergies

If possible, you should avoid exposure to what you are allergic to. If this is impossible, you can get medicine to alleviate the symptoms. They are usually on different types of anti-histamine or adrenal cortical hormones. If you have very severe symptoms, one can consider an allergy where the body's immune system slowly weaned not to respond to all gene. However, it is a very long-term treatment, typically 3 to goods



Select and complications

Many have allergies in children age but feel that allergien slowly disappear with time. In other shows a flash of symptoms in adulthood, after which the symptoms after a period of years are often lenient. If you have hay fever have 2-3 times more likely to develop asthma.



Prevention of allergy

Allergy is to some extent inherited, so that a child of parents with allergies are more likely to develop allergies than a child when parents do not have allergies. Breast-feeding in the child's first 6 months of living can reduce the risk that the child develops allergy to cow's milk. If breastfeeding is not possible, you should apply a special hypoallergen formula. The child should not get mad glutenholdig (

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