👉 Pleuralgic, in medicine, refers to a condition where fluid accumulates around the lungs and causes symptoms such as coughing, wheezing, shortness of breath, chest tightness, and difficulty breathing. Pleural fluid is made up of fluids like synovial fluid, which is produced by the lining of the pleura (the membrane surrounding the lungs), and other proteins, such as fibroblasts. The fluid in the pleura can be caused by various causes