Many allergens, such as dust and pollen. In such cases occur in areas that are in the air, the eyes, the nose and the lungs to come. For example, allergic rhinitis, colds and hay fever, nasal irritation, sneezing, itching, also known as the redness of the eyes. The effect is inhalation of allergens, asthma causing the respiratory tract and asthma (bronchoconstriction) the production of mucus
Dyspnea (difficulty in breathing), cough and shortness of breath decrease lung.
These allergic reactions, allergens, the environment and the food and drugs, such as aspirin and antibiotics, such as penicillin reactions. Symptoms of food allergies is a pain in the stomach, vomiting, diarrhea, itching, and increase of the skin during hives. Rhinitis and respiratory allergies rarely cause reactions (asthma).