Latest study in Germany has established a significant link between birch pollen allergy and oral allergy syndrome. The study by a team of researchers from the Department of Otorhinolaryngology, Head and Neck Surgery, Ludwig-Maximilians-University Munich, Germany, analysed 1,119 patients with a positive skin prick test to birch and allergen components Bet v 1 and profilin retrospectively, to find that patients with birch allergy recognizing both allergens have more probabilities of suffering from an oral allergy syndrome. Patients with simultaneous specific IgE to the allergen components Bet v 1 and profilin have to deal more often with an oral allergy syndrome and intestinal reactions in addition to higher risk for rhinitis and asthma.