Rhinitis is inflammation of the nasal airways. Similar to asthma it is caused in the majority of cases by inhaled airborne allergens which can not be seen by the eye! Its can result in sneezing, itch, nasal secretions or chronic nasal obstruction with snoring. If not properly controlled rhinitis can make asthma worse, give eye symptoms (allergic conjunctivitis), sinusitis and even cause new food allergies!
Common colds, caused by viruses, can make allergic rhinitis worse. So can pollution, cigarettes smoke exposure or perfumes. With viruses , however, the symptoms are short lived for a few days and with fever usually. While with allergy symptoms are for months or years! and not associated with fevers.
Treating allergic rhinitis with allergen specific immunotherapy is an effective and has long lasting benefits even when stopped!