Allergy is a disorder of the immune system . Allergic reactions
occur due to normally harmless environmental substances known as
allergens; these reactions are acquired, predictable and rapid.
Allergy is one of four forms of hypersensitivity.
Mild allergies like allergic rhinitis are highly prevalent in the
human population and cause, allergic conjunctivitis, itchiness and runny nose. Allergies can play a major role in conditions such
allergies are common and impact people during the spring, summer
and fall. As we enter spring, the culprits causing symptoms in most
people will be trees (like oak and elm), grasses and weeds and will
vary from region to region.
Risk factors for allergy can be placed in two general categories,
namely host and environmental factors.
Host factors include heredity, sex, race and age, with heredity
being by far the most significant.
However, there have been recent increases in the incidence of
allergic disorders that cannot be explained by genetic factors
Four major environmental candidates are alterations in exposure
to infectious diseases during early childhood, environmental
pollution, allergen levels and dietary changes.
An allergen is something that triggers an allergy. When a person
with allergic rhinitis breathes in an allergen such as pollen
or dust, the body releases chemicals, including histamine. This
causes allergy symptoms such as itching, swelling etc.
Allergic rhinitis is a type of immune reaction. Normally, the
immune system responds to foreign microorganisms, or particles
like pollen or dust, by producing specific proteins, called
Signs and Symptoms
Shortness of Breath
Irritation of Nose
Decreased Sense of Smell
Itching of Eyes
Sense of Taste
High-Pitched Breath Sounds
Prevention include avoiding Allergen Exposure.
Avoid going outdoors during Allergen Season.
Symptoms can sometimes be prevented by avoiding known allergens.
During the pollen season, people with allergic rhinitis should
remain indoors in an air-conditioned atmosphere whenever possible.
Most trees produce pollen in the spring.
Reducing exposure to pollen may improve symptoms of seasonal
allergic rhinitis, Strategies include the following: staying
indoors with windows closed during the morning hours, when pollen
levels are highest keeping car windows up avoiding uncut fields
and also using surgical face mask while driving.