To relieve nasal itching, he may push up the tip of the nose with the back of the hand, the so-called allergic salute . In the episodic form, symptoms occur when a person is exposed to the allergenic substance only intermittently. A friend's pet is a good example of this type of rhinitis, if you don't have the same kind of pet at home. Seasonal allergic rhinitis is due to allergy to pollens or outdoor mold spores. Pollen is the male sex cell of flowering plants.
Few persons are allergic to plants with bright, showy blooms like roses or tulips.
A point of confusion may be the symptoms caused by flowers with a strong scent, like night-blooming jasmine. These symptoms of congestion and runny nose are due to vasomotor rhinitis. When symptoms occur in January or February the usual culprits are juniper, cypress, oak, ash, or alder pollens. Many other trees cause problems from late winter through June. Olive and privet are closely related and pollinate from May until August.