Asthma is fairly common in young children, and oftentimes people with family members who have asthma or allergies are more likely to develop asthma. This is the endotype underpinning allergic asthma and is strongly linked to atopy, IgE production, and eosinophilic inflammation. Allergy and Asthma Proceedings is medical journal dedicated to distributing timely scientific research in allergies, asthma and immunology. Allergy and Asthma Proceedings is medical journal dedicated to distributing timely scientific research in allergies, asthma and immunology. Asthma is a highly-prevalent heterogeneous disease characterized by variable airflow obstruction with cough, dyspnea and wheezing. Asthma can make breathing difficult and cause coughing and wheezing. Learn about the different types of asthma here, such as bronchial asthma and allergic reactions. The characteristics of asthma are three airway problems: Obstruction. Inflammation. Hyperresponsiveness. This study evaluated the relationship between asthma symptoms and the degree of airflow obstruction in elderly and young asthmatics. Asthma deaths have decreased over time and varied by demographic characteristics. Multiple phenotypes of asthma are recognized, and no unique set of clinical characteristics or any single diagnostic test is specific for asthma.