Efficacy and Safety of Specific Immunotherapy With CLUSTOID Grass Pollen

Inclusion Criteria: * Positive history of allergic rhinitis/rhinoconjunctivitis due to grass and/or rye pollen * Positive screening skin prick test (wheal diameter \> 3 mm) * Compliance and ability of the patient to complete a Diary Card for self-evaluating of the symptoms and antisymptomatic medication * Signed and dated patient´s Informed Consent, Exclusion Criteria: * Previous immunotherapy with grass and/or rye pollen extracts within the last 3 years, * Simultaneous participation in other clinical trials, * Other reasons contra-indicating an inclusion into the trial according to the investigator´s estimation (e.g. poor compliance), * Auto-immune disorders, * Severe chronic inflammatory diseases, * Malignancy, * Alcohol abuse, * Existing or intended pregnancy, lactation and/or lack of adequate contraceptive protection, * Patients being in any relationship or dependency with the sponsor and/or investigator, * Treatment with beta-blockers (incl. local application) and/or other contra-indicated drugs.