The condition known as pleural effusion, or “Water on the Lungs,” is characterized by an abnormal accumulation of fluid in the pleural region around the lungs. The pleura is a thin, delicate membrane that lines the inside of the chest cavity and surrounds the lungs. Their main purpose is to help and lubricate the respiratory mechanism. Normally, there is a tiny amount of fluid in this pleural region by nature, which helps the lung surfaces move smoothly during breathing. On the other hand, when pleural effusion occurs, an excessive amount of fluid accumulates in this area, which may hinder the lung’s ability to expand completely when breathing. There are several underlying reasons for this extra fluid, including infections, inflammatory diseases, heart failure, cancer, or hepatic disorders. The common symptoms of pleural effusion include cough, shortness of breath, and chest pain that gets worse as you breathe; these symptoms are frequently non-specific and can be hard to distinguish from those of the underlying illness.