Frequent lung infection
Additionally, frequent respiratory infections are a symptom of cystic fibrosis. Normally, the body eliminates viruses and bacteria through the nose or mouth as a person breathes. However, when the body is filled with thick mucus, it prevents the elimination of pathogens and causes inflammation, which causes obstruction and constriction of the smooth muscles that encircle the airways. In this manner, mucus begins to cause more problems for the body, and infections begin to occur because thick mucus provides an ideal environment for all types of bacteria. Lung infections can also result in numerous additional complications.