The pollen season is a period in which | a wide variety of pollen occurs in the air. This period may take longer than expected, up to ten months a year. The pollen season is divided into three periods, with a different group of allergens in each.
The most common cause of all these allergies is the pollen of various woods, grasses, and weeds. In our country, the first pollen is beginning to appear in the air even at the end of winter, and with the gradual increase in temperature, its occurrence increases.
What is the cross-reaction of allergens?
There are a lot of cross-reactions. It is good to know about them if you have a very serious allergy, especially one in which you may have a life-threatening encounter with an allergen. In this case, doctors will advise you not only to avoid the direct allergen, but also all that carries the risk of cross reaction. Around 50% of pollen allergy sufferers only cross-allergy, such as pollen and food, in Central Europe. Cross-allergy is a phenomenon based on the similarity of allergens. This happens when the immune system IgE antibodies generated to defend against a particular allergen respond to another allergen, based on similarity in a number of amino acids.
Spring pollen allergies – can they be avoided?
First allergens occurring between January and May
The first is usually a hazel, thanks to the noticeable short-term warming it is sometimes already in January. Hazelnuts start the pollen season and are among the most important allergens, thanks to their crossbreed reaction with birch, hornbeam, alder, beech and oak. In February to March, alder begins to bloom, which also crosses with birch, hazel and hornbeam, and somewhat less with pollen of beech trees. From March to April poplars bloom. The most important pollen allergen of the spring season is birch and its related genera. They bloom from March to May and their pollen reaches far distances.
Pollen allergy – polinosis
Birches and food allergens, pollen calendar
Birch tree species react with most other spring trees, such as hazel, oak, beech, linden, black without, elm, willow, maple, ash, poplar, plane, wormwood and some grasses. However, their cross-reactions with food allergens such as hazelnuts, fruit, carrots, celery, potatoes or melons are significant. During April and May, the spring pollen season begins to mingle with the so-called grass season and the worst season of the year occurs for allergy sufferers. Every pollen allergy should know and take into account the pollen calendar, which is a year-long overview of the flowering period of the most common plant allergens. However, each such table needs to be approached with caution, as the flowering time of individual plants varies depending on the weather.
What is pollen intelligence for?
Pollen coverage – this is the current occurrence of different pollen in the air that we can follow through the pollen season with Pollen Information Services . Thus, weekly updates on pollen status in the air are published, along with predictions of their incidence for the near future. Twelve pollen stations measure the pollen concentration in the air in the Czech Republic.