The severity of the allergic reaction to pollen varies from person to person according to:

  • the immune system of the sensitized person which reacts in different degrees to the allergen
  • the type of pollen to which the person is allergic
  • the intensity of development of the pollen season.

What are the symptoms of an allergy to pollen?

The symptoms of an allergy to pollen mainly affect the respiratory tract (nose, throat, bronchial tubes) and the eyes:

  • sneezing, stuffy nose, running nose, stuffy sinuses, loss of the sense of taste and smell
  • tingling, itching, red and watery eyes
  • sometimes itching at the back of the mouth and in the throat.

The severity of the symptoms can vary from person to person and depends on the quantity of pollen in the air.

In some cases, pollen exposure may trigger asthma symptoms.

Perinnial allergic rhinitis

The allergy to pollen is called “seasonal allergic rhinitis”.

Year-round allergens from house dust mites and domestic animals may also reach the respiratory tract and so can cause the symptoms of allergic rhinitis. In this case, it is called “perennial allergic rhinitis”.


The Belgian aerobiological surveillance network “Airallergy” quickly informs general practitioners, specialists, pharmaceutical firms and the general population of the presence of allergens in the air.

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