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  • Title: Risk factors for asthma and other allergic diseases in seasonal rhinitis.
    Author: Celikel S, Isik SR, Demir AU, Karakaya G, Kalyoncu AF.
    Journal: J Asthma; 2008 Oct; 45(8):710-4. PubMed ID: 18951265.
    Abstract:
    BACKGROUND: Rhinitis and asthma are common comorbidities. The aim of this study was to determine the risk factors for asthma and other allergic diseases in seasonal rhinitis (SR) patients. METHODS: Records of 922 patients diagnosed as SR between 1991 and 2005 were evaluated retrospectively. Patients were grouped according to the results of our standard skin prick tests as follows: I-No sensitization: no sensitization to any allergen; II-Mono-pollen sensitization: sensitization to only one pollen allergen; III-Poly-pollen sensitization: sensitization to more than one pollen allergen; IV-Mite sensitization: sensitization to mite with or without any other allergen sensitization. RESULTS: The mean age of the patients was 29.5 +/- 9.6 and 587 patients (63.2%) were females. Age at onset of SR was median 21 years (16-29 years). Of the 922 patients, 99 had no sensitization, 335 had poly-pollen sensitization, 346 had mono-pollen sensitization, and 142 had mite sensitization. The most prevalent allergens were P. pratense (85.3%) and O. europae (31.5%). No sensitization group as compared to poly-pollen sensitization group had significantly higher prevalence of asthma as a single accompanying disease (14.1%, p < 0.05). Mono-pollen sensitization was significantly associated with lower risk of any accompanying allergic disease (OR: 0.7, 95% CI 0,5-0,9) while no sensitization group (OR: 2.8, 95% CI 1.3-5.9) and mite sensitization were associated with asthma (OR: 2.3, 95% CI 1.2-4.4). CONCLUSION: SR is a condition that presents with different phenotypes. The group with no sensitization and mite sensitization has the highest prevalence of asthma while SR patients with mono-pollen sensitization are unlikely to have an accompanying allergic disease, including asthma.
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