Sequelae of pleurisy commonly include pleural thickening, pleural adhesion, weakening of lung function, etc. 1. Pleural thickening: the most common sequelae of pleurisy patients is pleural thickening, most of the patients due to pleural effusion is not treated in time, which the fibrous tissue will accumulate in the pleura, and pleural thickening will occur over time. 2. Pleural adhesion: long-term pleural thickening will squeeze the surrounding organs, pleura, organs are squeezed together for a long time, and adhesion occurs. 3. weakened lung function: most pleurisy patients will have chest pain, long-term chest pain causes different degrees of lung function weakening, such as dyspnea. Patients with pleurisy should be actively treated to avoid the sequelae of prolonged illness, usually must pay attention to rest and not to strain, when the body is not well, please consult a doctor in time.