Standardized grass pollen allergenic extracts(Greer Laboratories, Inc.)

As the principal objective of this study is to evaluate the efficacy and safety of the treatment measuring the changes in a symptom score, the patient will be asked to fill in a patient diary. This diary will evaluate the week before the patient comes back to receive the treatment. Nose (sneeze, blockage and running), eye (itching, redness and swelling) and chest (breathlessness, wheeze, chest tightness), are scored on a scale from The patient will be instructed to daily assess each one of the symptoms, recording them on an individual symptoms follow-up diary.