Many patients also have neurological symptoms, such as numbness in the hands and feet, or headache, dizziness and lack of blood supply to the brain, and transient syncope, as well as tearing pain in the chest. Severe cases may also be accompanied by obvious changes in blood pressure, and bilateral upper extremity blood pressure asymmetry may occur during physical examination. Secondly, patients with spontaneous pneumothorax will show chest pain, severe respiratory distress, or even obvious mediastinal emphysema, and need to choose surgery for drainage if necessary. Patients with simple pleurisy may also experience chest pain, which may be pinprick-like or knife-like pain, and may be accompanied by fever. If tuberculosis is the cause, there will also be a significant low-grade fever.