The Effect of Allergen Immunotherapy on Exhaled Nitric Oxide in Adult Patients With Asthma and Allergic Rhinitis

The Effect of Allergen Immunotherapy on Exhaled Nitric Oxide in Adult Patients With Asthma and Allergic Rhinitis

This study will evaluate whether exhaled nitric oxide levels are affected by allergen immunotherapy ("allergy shots"). The investigators' hypothesis is that successful allergen immunotherapy may be accompanied by decreased exhaled nitric oxide levels.

Inclusion Criteria:

• Subjects over 18 years old with allergic asthma and/or allergic rhinitis who are beginning allergen desensitization

Exclusion Criteria:

• Smokers
• Subjects of dimished capacity