Wet pleurisy refers to an inflammation of the pleura, the thin membrane that lines the lungs. This condition leads to an accumulation of fluid in the pleural cavity, which can cause chest pain and shortness of breath. Although there are no specific synonyms for wet pleurisy, the medical term for this condition is pleural effusion. Other related terms include fluid in the lungs, pleural fluid, and lung water. Treatment of wet pleurisy typically involves draining the fluid from the pleural cavity and addressing the underlying cause of the inflammation.