Last updated:03-05-2009
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Definition and causes

Hay fever is an allergic reaction to pollen in the air. (see also Pollenallergi. It is a seasonal disease that occurs only during those periods when there is pollen. Pollen is small particles from the flowers and trees that spread by wind. Pollen captured in particular næseslimhinden and eyes, which cause an allergic reaction (an exaggerated immune response) leading to irritation of the nose and eyes.
Hay fever in spring is often birkepollen with season around April-May. In summer hay fever due to pollen seen from ordinary grass species that bloom in June-July, and this is the most common form of hay fever in Denmark. From August seen pollen from particular gråbynke.
Hay fever seen most frequently in children, and the frequency has increased in recent decades. It is believed that 10-15% of the population has hay fever. Often, a person allergic to one kind of pollen, but you may be allergic to several.

Symptoms of hay fever

  • Itchy red eyes, running in water.
  • Itching of the nose, leading to violent newly, often in seizures.
  • Runny nose: secretions are thin almost like water, and the nose is constantly clogged with the secretions.
  • Dry cough and breathing pibende, possibly. actual asthma attack.
The severity depends on how much pollen is in the air. Daily pollental communicated weather and can be found on teletext and the Internet. 1-10 per pollen. cubic meter of air usually no symptoms, 10-30 gives moderate symptoms, and over 30 gives severe symptoms. The symptoms are worst outdoors, especially in hot, dry and windy weather, and if the person is near, for example. grass.
People with hay fever are often violently annoyed by the symptoms and have difficulty concentrating and careful work / school. Many people who are allergic to birkepollen are also allergic to nuts and certain types of fresh fruit, such that at intakes of sheep itching of mouth and pharynx.

Precautions and diagnosis

When symptoms of hay fever should go to his own doctor, with hay fever should be treated. The doctor makes the diagnosis from the typical medical history of season-related genes from the nose and eyes. Evt. tested for allergy to birch, grass and gråbynke by a skin prick test. This is a test where you put a drop of liquid containing a possible allergy-producing substance (eg. Grass) on underar

Treatment of hay fever

  • Avoid if possible pollen: Keep doors and windows closed, avoid outdoor activities, get a second to turn the lawn and trimming hedges.
  • AntihistaminesThese exist both as tablets, the nasal spray and eye drops. Depending on how annoyed you are, you can choose among them. When symptoms every day should be fixed throughout pollensæsonen take anti-histamine tablets to keep the allergic reaction down. This could be complemented by nasal spray or drops that act quickly to local symptoms. If symptoms occur only when exposed to specific m
  • Adrenal cortical hormones(steroid): You may have adrenal cortical hormones in the nasal spray if antihistamines have enough power. This works only after a few days and should be solid throughout the season to have any effect. By particularly severe symptoms it can be envisaged to provide daily tablets of adrenal cortical hormones or a single depot injection of adrenal cortical hormones in early pollensæsonen.
  • Desensitization: Because this treatment is very time consuming and associated with a small risk of anaphylactic shock (see Shock), a livtruende condition, this treatment is offered only to persons above, where the treatment has no effect. Desensitization is know that you try to slowly wean the immune system to the pollen they are allergic to, so the allergic reaction in the end are not forthcoming. Every 6 to 8. week for 3 years must have a indsprøjtn

Select and complications

When the hay fever begins in childhood, is often that the symptoms worsen over the next seasons, after which they stay at the same level until 30-40 years of age. Then alleviated the symptoms slowly over the next year.
People with hay fever have 2-3 times as likely to develop asthma (see Asthma) and course of asthma) compared with persons who do not have hay fever. Especially if the person has very pronounced hay fever symptoms such as asthma-like attacks and is also allergic to husstøvmider.
If you've developed an allergy to one kind of pollen, there is increased risk that there will also be allergic to another. There is no increased risk of developing allergy to animal hair.
You can view today's pollental of Asthma-Allergy Associationhere





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Commom Cold - Rhinitis
Hay Fever (Seasonal allergic rhinitis)
Nosebleed - Epistaxis
Repealed nose (Anosmi)



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