Perennial AR is often triggered by house dust.Other potential causes of perennial allergic rhinitis include the following:cigarette smoke.perfume.cosmetics.cleansers.copier chemicals.industrial chemicals.construction material gases.
There are two types of allergic rhinitis: seasonal and perennial.
Allergic rhinitis.is an inflammation of the nasal passages caused by allergic reaction to airborne substances. Perennial AR occurs all year and is usually caused by home or workplace airborne pollutants.
Reducing exposure to pollen may improve symptoms of seasonal AR.Preventing perennial AR requires identification of the responsible allergens.
it is perennial
A perennial is a perennial no matter where it is grown.
perennial
Perennial
Perennial
A tender perennial is a perennial plant that is not hardy in cold climates.
Perennial
Perennial :)
perennial