LYCOS RETRIEVER 
Rhinitis: Nonallergic Rhinitis
built 635 days ago
Nonallergic rhinitis is generally transmitted in the same ways as the common cold. It is transmitted from person to person. The sick person touches his or her nose and then another person's hands. If that person then touches his nose, mouth, or eyes, the infection is transmitted. Infection can ... be transmitted through sharing of cups, silverware, or eating utensils, or by coughing or sneezing. Allergic rhinitis cannot be transmitted from person to person.
Source:
Aside from environmental allergens, other, nonallergic substances may ... cause rhinitis. Unlike allergic rhinitis, nonallergic (vasomotor) rhinitis occurs when the body releases a variety of inflammatory mediators, including histamine, in response to inorganic airborne irritants, such as smoke, perfume, and car exhaust. Vasomotor rhinitis is believed to be an exaggeration of the usual nasal response to irritation, occurring at levels of exposure that most people do not notice.5 Often, patients, clinicians, and pharmacists cannot determine whether the rhinitis is allergic or vasomotor in origin. Patients are advised to avoid sources of irritating particulates where possible. Ocular disorders such as allergic conjunctivitis are often seen in association with rhinitis and also require effective management.
Source:
Occupational rhinitis is triggered by exposure to irritants and allergens. Allergen-related occupational rhinitis clearly is in the allergic rhinitis category, whereas irritant-related occupational rhinitis is better categorized as nonallergic rhinitis. Causes of the allergen subtype include laboratory animals (e.g., rats, mice, guinea pigs), grains, coffee beans, and wood dust. Causes of the irritant subtype include tobacco smoke, cold air, formaldehyde, and hair spray.
Source:
Nonallergic rhinitis is caused by blood vessels in your nose expanding (dilating), filling the nasal lining with blood and fluid. Sometimes nonallergic rhinitis is caused by inflammation of the lining of the nose. There are several possible causes of this abnormal dilation of the blood vessels or inflammation in the nose. But, whatever the underlying cause, the result is the same — swollen nasal membranes and congestion of an already-narrow area.
Source:
Comparative data in the form of clinical trials between nasal corticosteroids, specifically in patients with nonallergic rhinitis, are scarce. A study of budesonide compared with beclomethasone demonstrated that budesonide was superior regarding total nasal symptom score at the midpoint (ie, 6 mo) and at the conclusion (ie, 12 mo) of the study. The total nasal symptom score was composed of sneezing, nasal congestion, and rhinorrhea. The influencing factor was that patients treated with budesonide had improved resolution of sneezing episodes relative to patients treated with beclomethasone.
Source:
The AHRQ found no prospective studies in the literature that explicitly differentiated allergic from nonallergic rhinitis. Making a specific diagnosis is most important if treatments vary between the conditions. Because of the crossover in treatments, differentiation is primarily significant when considering environmental control and institution of oral antihistamines and immunotherapy, which have proven benefit only in the treatment of allergic rhinitis.
Source:
MORE ABOUT
Nonallergic Rhinitis