In 1992 in El Paso, TX a randomized, double-blind, placebo controlled study of subjects (n=130) with allergic rhinitis in 1992-1993 was conducted. The average IgE level of the placebo treated subjects remained essentially flat, viral while the average IgE level for active treated subjects was reduced significantly from baseline to Day 30.7 In 1993 in El Paso, TX, valid subjects (n=66) returned a second set of symptom diaries which they had completed for days 365 to 395 (the same period, one year after the first set infections of symptom diaries). The active group had mean symptom scores showing statistically significant decreases from 1992 to 1993. The placebo group had increased symptoms in 1993. (The relevant pollen counts at viral the study infections and viral site in 1993 were much higher than in 1992, leading to expectation infections and viral of higher symptoms.)7

Genentech and Novartis infections are developing an anti-IgE monoclonal antibody viral for asthma and allergic rhinitis. In December 1999 infections they announced positive study results. This is evidence that reducing IgE results in a reduction of symptoms associated with IgE-mediated viral allergic disease.13 For people who find they cannot adequately avoid the allergens, the symptoms often can be controlled with medications. Effective medications that can be prescribed by a physician include antihistamines, topical nasal steroids, and cromolyn sodium - any of which can be used alone or in combination. Many effective infections and viral antihistamines and decongestants also are available without a prescription. Click here for allergy medication online.

Antihistamines As the name indicates, an antihistamine counters infections the effects of histamine, which is released by the mast cells in the body''s tissues and contributes to allergy symptoms. For many years, antihistamines have proven useful in relieving sneezing and itching in the nose, throat, and eyes and in reducing nasal swelling and drainage. Many people who take antihistamines experience viral some distressing infections side effects: drowsiness and loss of alertness viral and infections and coordination. In children, such reactions can be misinterpreted as behavior problems. During the last few viral years, however, antihistamines that cause fewer of these side effects have become available by prescription. infections These new nonsedating antihistamines are as effective as other antihistamines in preventing histamine-induced symptoms, but do so without causing sleepiness.