Fibroscopy can be painful because it involves passing an index-finger-thick bronchoscope through the mouth and into the trachea. During the examination, the patient may experience sore throat, coughing, difficulty breathing, chest tightness, etc. Some patients may stop the examination because they cannot tolerate it, or the doctor may stop the examination because of severe coughing. If you are afraid of the pain during the fibrinoscopy, you can consider painless bronchoscopy. Painless bronchoscopy is the same as gastroscopy in that the patient does not feel any pain during the examination and usually wakes up naturally within a few minutes after the examination and does not remember the painful memories of the examination.