If air bubbles accumulate in the subcutaneous fat tissue, then one speaks of a pathology such as subcutaneous emphysema. Usually, emphysema appears on the background of other diseases - for example, in the defeat of the respiratory system or esophagus.
Many people are familiar with the feeling of lack of air. At such times a person begins to breathe more often and deeper - in order to make up for the lack of oxygen. Similar disturbances of the respiratory process are called dyspnea.