We report the clinical characteristics of peach allergy encountered in a population of peach-allergic patients. We evaluated 165 patients. The 70 peach-allergic patients were diagnosed through clinical history, the skin prick-prick test, and open oral challenge and rub tests to peach. As a pollinic control group, 95 pollen-allergic patients were also evaluated. Some 49% of the patients were male and 51% female. The mean age was 20 +/- 8 years. Oral allergy syndrome (86%) was the most common symptom, followed by contact urticaria (61%) and systemic symptoms (26%). Some 67% of the patients were allergic to peach pulp and 36% reported symptoms related to canned peach. Canned peach and pulp symptoms were statistically associated (P < 0.01), and symptoms to canned peach were more frequently reported by patients with systemic symptoms (P < 0.05). On evaluation of the peach-allergic patients' characteristics, three risk factors--allergy to peach pulp, allergy to canned peach, and peach allergy in non-pollen-allergic patients--were found, indicating development of systemic symptoms on eating peach. Most of the peach-allergic patients (81%) also had pollen allergy, which was linked to a higher prevalence of asthma (73%) than in the pollen-allergic patients of the control group (48%); this difference was statistically significant (P < 0.01). Finally, two groups were clearly defined by the seriousness of the peach allergy--the non-pollen-allergic patients were more predisposed to the occurrence of systemic symptoms (> 50%), and the pollen-allergic patients to asthma (> 70%).
The duration of AR in patients attended for the first time by specialists is long and, in general, the disease does not improve over time and is often not well controlled with pharmacologic interventions. Less than one-half of patients receive allergen-specific immunotherapy that is more often prescribed in HDM allergy.
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