Asthma occurs when the main air passages of your lungs, the bronchial tubes, become inflamed. The muscles of the bronchial walls tighten, and cells in the lungs produce extra mucus further narrowing your airways. This can cause minor wheezing to severe difficulty in breathing.
Babies who are born prematurely or who experience respiratory problems shortly after birth are at risk for bronchopulmonary dysplasia (BPD), sometimes called chronic lung disease. Although most infants fully recover from BPD and have few long-term health problems as a result, BPD can be a serious condition requiring intensive medical care. A child is not born with BPD. It is something that develops as a consequence of prematurity and progressive lung inflammation.
Chronic lung complications
Chronic lung disease is a condition in which damaged tissue in a newborn baby's lungs causes breathing and health problems. The lungs trap air or collapse, fill with fluid, and produce extra mucus. Most babies who have chronic lung disease survive, and many outgrow their lung problems.
Lower Respiratory Tract Infection
The lower respiratory tract consists of the trachea, bronchial tree, and lungs. Lower respiratory tract infection often refers to pneumonia, but can also be applied to other types of infection including lung abscess, acute bronchitis and emphysema. Symptoms typically include shortness of breath, weakness, high fever, coughing and fatigue.