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
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