The main sequelae of pleurisy with pleural effusion are pleural adhesions, which can affect respiratory function. Pleurisy is mostly caused by infectious diseases, although a portion is also due to non-infectious diseases. In the case of pleural effusion caused by infectious diseases, it contains a large amount of fibrinogen, which has the function of adhering to our pleura, thereby causing the pleura to thicken. At this time, the pleura will compress our lungs, significantly reducing the respiratory volume of our lungs, which greatly affects our respiratory function. Patients mainly exhibit symptoms such as shortness of breath, chest tightness, and rapid breathing even with slight activity or while lying in bed. Therefore, if pleurisy is detected, it is crucial to drain the fluid from the patient as soon as possible to avoid delaying treatment and the subsequent development of severe sequelae.