Dr. Aresery is an allergy and asthma specialist focusing on the treatment of adult and pediatric allergic diseases and asthma. He is specially trained to identify the factors that trigger asthma or allergies. Dr. Aresery performs and interprets prick skin testing for food and environmental allergies and patch testing for skin sensitivities, and he can prescribe allergen immunotherapy (allergy shots). Allergy is the branch of medicine that treats hypersensitivity disorders of the immune system. Allergic reactions occur when a person's immune system reacts to normally harmless substances in the environment, such as pollen, food, or cat hair. Asthma is a common chronic inflammatory disease of the airways.