J20-J22: Other acute lower respiratory infections

J22: Unspecified acute lower respiratory infection

The air is breathed in through the mouth or nose. From there the air goes into the trachea via the larynx. At the end of the windpipe are two bronchial tubes (or bronchi) branching away from it. The bronchial tubes run into the lungs. What is more, the bronchial tubes divide into even smaller branches. The larynx, the trachea, the bronchia and the lungs are part of the lower airways.

An inflammation in the lower respiratory tract can cause various symptoms. You may have a high temperature and cough. Breathing may also become difficult.