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)
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.