What condition describes difficulty breathing when lying down?

The condition that describes difficulty breathing when lying down is known as orthopnea. This symptom typically occurs when individuals experience an increased preload on the heart or a redistribution of body fluids that can lead to pulmonary congestion when supine (lying flat). People with orthopnea often find relief by propping themselves up while sleeping or sitting up, as this position helps to alleviate the pressure on their lungs and improve airflow.

Dyspnea is a broader term that describes difficulty in breathing but does not specifically address the positioning of the body. Cyanosis refers to a bluish discoloration of the skin due to insufficient oxygen, while clubbing is a physical condition characterized by the thickening and widening of the fingers or toes, usually as a result of chronic respiratory issues. These conditions are related to respiratory health but do not specifically indicate difficulties in breathing when lying down.