What condition is characterized by difficulty breathing when lying down?

The condition characterized by difficulty breathing when lying down is known as orthopnea. This occurs when a person's ability to breathe comfortably is affected by their position, particularly when reclined. Individuals with orthopnea often find relief by sitting up or propping themselves with pillows, as this position helps expand the lungs and reduce pressure on the diaphragm, making it easier to breathe.

This condition is commonly associated with heart failure and other pulmonary issues, where lying flat may exacerbate fluid retention in the lungs, leading to shortness of breath. Understanding orthopnea is vital in a clinical setting, as it can indicate underlying cardiac or respiratory problems that require further evaluation and management.