The assessment of the incidence of food allergy or intolerance in patients with respiratory allergy

: In this study we have evaluated the possible relationship between food allergens and hypersensitivity to grass pollens. One hundred-thirty patients with grass pollen pollinosis and symptoms probably related to adverse reaction to foods were selected. Skin prick test for food allergens was positive in 79 patients (60.7%) Statistical analysis using chi-square test showed a high significant relationship between grass pollen and nuts, peanuts, beans and peas (p less than 0.0001). Elimination diet and challenge test allowed us to identify the responsible foods in 61 out 79 patients (77.2%). Twelve patients were affected by food allergy (challenge test, skin prick test and RAST positive and concordant); 49 patients suffered from intolerance. Possible causes of this high relationship are discussed.