These triggers include indoor allergens such as mold, house dust mite, cockroach and animal dander. Symptoms are the same as seasonal allergic rhinitis but are experienced throughout the year. The health care provider makes the diagnosis for perennial rhinitis by your medical history and positive skin tests to relevant allergens. This type of rhinitis is not well understood. Symptoms are the same as perennial rhinitis with allergic triggers.
Diagnosis is determined from negative skin tests and a nasal smear test positive for eosinophils.
Nasal polyps can be a complication of this condition. This is also known as vasomotor rhinitis. A person with this type reacts to temperature and humidity changes, smoke, odors and emotional upsets. Symptoms are primarily nasal congestion and postnasal drip. Diagnosis comes after negative skin tests and nasal smear negative for eosinophils.