Subcutaneous emphysema is defined as air trapped under which part of the body?

Subcutaneous emphysema occurs when air leaks into the subcutaneous tissue, which is the layer of tissue directly beneath the skin. This condition can result from various causes, such as trauma, surgery, or certain medical conditions that allow air to escape from the lungs or airways and accumulate under the skin. When diagnosing subcutaneous emphysema, the presence of air beneath the skin is often detected by examining the affected area, which can present with swelling, a crackling sensation when touched, and visible bulging. Understanding this condition highlights the importance of recognizing symptoms and their implications for breathing and overall health.