What is a seasonal
allergy? WA seasonal allergy is an allergic
reaction to a trigger that is typically only
present for part of a year, such as spring or
fall. This type of allergy refers to a pollen
allergy, and includes trees, weeds and grasses.
Perennial allergies, on the other hand, are
usually present year-round and include pet dander
and house dust mite allergens. Molds can be a
seasonal or perennial allergy trigger.
What causes springtime
allergies?
Spring allergies are a result
of pollen from trees, which can start pollinating
any time from January to April, depending on the
climate and location. Trees that are known to
cause severe allergies include oak, olive, elm,
birch, ash, hickory, poplar, sycamore, maple,
cypress and walnut. In some areas of the world,
some weeds will also pollinate in the springtime.
What causes summertime allergies?
Grass pollen is typically the main
cause of late spring and early summer allergies.
Grass pollen is highest at these times, although
grass may cause allergies through much of the year
if someone is mowing the lawn or lying in the
grass.
What causes fall allergies?
In most areas, pollen is measured and
counted with the different types of pollen
identified. This may be reported in terms of
trees, weeds and grasses, or may be further
divided into the types of trees and weeds
identified.
Common symptoms
Runny nose
Watery eyes
Itchy nose, eyes and roof of mouth
Sneezing
Stuffy nose
Pressure in the nose and cheeks
Ear fullness and popping
Dark circles under the eyes
Hives
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Source: American Academy of Allergy, Asthma and
Immunology
