Study of Specific Allergen Immunotherapy in Grass Pollen Allergic Subjects With Epicutanoeus Allergen Administration

Inclusion criteria: Written informed consent History of grass pollen allergic rhinitis for at least two years Male and female between 18 years to 65 years Positive skin-prick test to grass pollen Positive conjunctival provocation test Exclusion criteria: Eczematous skin lesions on the upper arms Perennial rhinitis due to perennial allergies or anatomical reason (polyps, septal deviation) Symptoms of infectious disease with rhinitis in between the last week Surgical intervention in between the last 30 days Pregnancy or nursing History of HIV or AIDS History of mastocytosis (cutaneous or systemic) History of significant cardiovascular disease Uncontrolled Hypertension (blood pressure \> 160 / 95) History of significant pulmonary, renal and/or hepatic disease History of significant hematological disorder Moderate or severe asthma History of malignancy Significant neurological or psychatric disease History of active autoimmune disease Antihistamines with longed half-lives in the last week Systemic or topical steroids for 5 days Depot corticosteroids for the last two months Active infectious disease Adipositas per magna Contraindicated medications: * immunosuppressive agents * Betablockers * ACE-inhibitors, AT 2 Antagonists * tricyclic antidepressants * daily use of Beta-agonists or steroid inhalers * Participation in another clinical trial /study at the moment or within the last 60 days