tailieunhanh - Non-Allergic Rhinitis (Kỳ 1)

Non-Allergic Rhinitis (Kỳ 1) "This material was prepared by resident physicians in partial fulfillment of educational requirements established for the Postgraduate Training Program of the UTMB Department of Otolaryngology/Head and Neck Surgery and was not intended for clinical use in its present form. It was prepared for the purpose of stimulating group discussion in a conference setting. No warranties, either express or implied, are made with respect to its accuracy, completeness, or timeliness. The material does not necessarily reflect the current or past opinions of members of the UTMB faculty and should not be used for purposes of diagnosis or treatment. | Non-Allergic Rhinitis Ky 1 This material was prepared by resident physicians in partial fulfillment of educational requirements established for the Postgraduate Training Program of the UTMB Department of Otolaryngology Head and Neck Surgery and was not intended for clinical use in its present form. It was prepared for the purpose of stimulating group discussion in a conference setting. No warranties either express or implied are made with respect to its accuracy completeness or timeliness. The material does not necessarily reflect the current or past opinions of members of the UTMB faculty and should not be used for purposes of diagnosis or treatment without consulting appropriate literature sources and informed professional opinion. Introduction Rhinitis in general is defined as two or more nasal symptoms of nasal congestion rhinorrhea sneezing or impairment of smell for more than 1 hr a day. There are different forms of rhinitis generally divided into three main categories 1 Infectious rhinitis 2 Allergic rhinitis 3 Non-Allergic rhinitis. Allergic rhinitis is defined as immunologic nasal response primary mediated by immunoglobulin E IgE . Non-allergic rhinitis is defined as rhinitis symptoms in the absence of identifiable allergy structure abnormality or sinus disease. There have been many terms to describe non-allergic rhinitis which include vasomotor rhinitis vascular rhinitis perennial chronic and noninfectious perennial rhinitis among others. A quick review of nasal function is warranted. Nasal function includes temperature regulation olfaction humidification filtration and protection. The nasal mucosal lining contains IgA proteins and enzymes which help protect from infections. Also nasal cilia propel the matter toward the natural ostia at a frequency of 10-15 beats per minute which causes a mucous flow at rate of to ml per minute. A review of the epidemiology shows that up to 10 of the US population is affected by rhinitis. That is 58 million .