LYCOS RETRIEVER 
Sinusitis: Allergies
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[R]hinitis and sinusitis can be the triggers of asthma. That is, patients without any asthma history can develop asthma AS A RESULT OF rhinitis and/or sinusitis. Simplistically, this seems to occur from constant dripping of mucus into the lungs, triggering an asthma reaction. The actual mechanism... is unknown. (See Guerra S, et al. Rhinitis as an independent risk factor for adult-onset asthma. J Allergy Clin Immunol 2002;109:419-25;
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Severe asthma (which is often associated with allergies) and chronic sinusitis often overlap, although the relationship is unclear. Between 53 - 75% of children with asthma caused by allergies have sinus abnormalities, and various studies have shown that between 17 - 30% of asthmatic patients develop true sinusitis. In fact, chronic sinusitis may actually be the cause of asthma in some cases.
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Gwaltney JM Jr, Scheld WM, Sande MA, Sydnor A. The microbial etiology and antimicrobial therapy of adults with acute community-acquired sinusitis: a fifteen-year experience at the University of Virginia and review of other selected studies. J Allergy Clin Immunol. 1992;90:457-462
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Dr. Tichenor recently completed a task force report on endoscopic evaluation of patients with sinusitis (both before and after surgery. It is available at http://www.aaaai.org/media/resources/academy_statements/practice_papers/endoscopy.pdf. It is in press with videos at the Journal of Allergy and Clinical Immunology and will be published early in 2008.
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If your chronic sinusitis is caused by an allergy, nasal sprays can ... reduce inflammation. Antihistamine tablets such as loratidine (eg Clarityn), which you can buy without a prescription, may also help. In severe cases, your GP may recommend a short course of steroid tablets but these are only available on prescription.
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Do you suffer from migraine headaches, confusion, hay fever, airborne allergies, insomnia, irritable bowel syndrome or sinusitis? All of these problems are common with Chronic Fatigue Syndrome (CFS). But, did you know that each of these symptoms could be caused or made worse by food allergies or sensitivities?
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