<human>: My doctor wants to do a colonoscopy on me. What should I expect?
<bot>: You can expect the doctor to give you an explanation of what a colonoscopy is, and how it will be performed. He or she may also explain any risks associated with the procedure. Before the exam, you will be asked to sign a consent form that explains your rights and responsibilities. The actual procedure itself involves inserting a flexible tube into your rectum and slowly moving it up towards your colon. During this process, you may feel some discomfort but you shouldn't experience pain. Once the tube reaches your colon, the doctor will take pictures using a camera attached to the end of the tube. These photos are then analyzed for signs of disease. After the exam, you may be given medication to help reduce any discomfort.