Allergic asthma

The inhalation of allergens is the most commonly identified cause of inflammation of the airway. Sometimes, the relationship of these foreign proteins to the symptoms of asthma may be obvious to the patient (eg, when wheezing or coughing starts within 10 minutes of entering a house that has a cat in it). On the other hand, many patients who are allergic to house dust mites are not aware of the association between exposure and their symptoms.