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Approximately 75% of people with asthma also suffer from allergies, which can make spring time a very challenging season for those who suffer from allergic asthma or seasonal allergies. For individuals with seasonal allergies, symptoms can include itchy, watery eyes, runny noses, and sneezing.

This is because, in the spring, various types of pollen from trees, grasses and weeds are carried by the wind and can be easily breathed in through the nose. When pollen particles are carried into the respiratory system, they can then trigger not only allergic asthma but also hay fever (seasonal allergic rhinitis) symptoms.

The pollen from silver birch trees is usually the most important tree pollen type affecting about 25% of those with pollen allergies. The season usually lasts for about four weeks and pollen counts are usually highest on dry, warm windy days, especially following periods of rain. The birch tree pollen season is followed by the oak tree pollen in late spring, although oak pollen affects fewer individuals than does birch pollen.

Although it is not possible to completely avoid these environmental triggers, there are ways you can minimize your exposure to these pollens and moulds both indoors and out. Explore our home, school, work, recreation and travel areas for ideas on limiting exposure to your allergic triggers.