Similar to an x-ray, radiation beams are not visible and you cannot feel them. You will not see the beam when it leaves the gantry, and most patients do not feel anything during treatment. Some patients, though, find it uncomfortable to remain still. For head or neck cancer treatment, you may be positioned with an immobilizing face mask to help you remain still. Some patients have difficulty adjusting to it, while others find that it becomes easier as the treatment progresses. Your treatment team will help to make you comfortable for each session, and you can always speak to them (via microphones in the treatment room) if you are uncomfortable.
Some patients do experience painful skin irritation as a result of the radiation post-treatment. If you do, your team can suggest ointments to take care of your skin.