Allergic rhinitis
Allergic rhinitis, the most common
symptom, occurs in two forms, the seasonal type and the
non-seasonal type. Seasonal allergic rhinitis is better known as
hay fever. Symptoms of allergic rhinitis include sneezing, watery
or irritated eyes, a blocked or runny nose and flu-like feeling.
The symptoms occur during the flowering season of trees, grasses or
shrubs, when they release pollen into the air, hence the term
'seasonal'. When the season is over, the symptoms disappear as
well.
Non-seasonal allergic rhinitis may occur all year round, its symptoms are comparable to the seasonal type but the allergens are different. Examples of this type of allergy are house dust mite and pet allergy.

