Have to weigh in on this, solely based on my experience........
Follow ups should be with the neuro-person (ie: neurologist, neuro-onc, etc) of the radiation team for these precise reasons.... for any post-radio issues. The radiation onc and such have done their portion by blue-printing the treatment and by doing the treatment... for all post-treatment, the neuro-team member should follow for anything that may crop up. NS and Radio-oncs should definately be kept updated to post-treat issues as it helps them with future treatments down the road and the hope is.... since these are "teams" performing the treatments, the "teams" usually have team meetings to keep everyone on the team up to date with patient post-treat statuses.
Like you, I have had pains around my head over the years (I am now 5-yrs post CK). Have been referred to Headache specialists and triggers of the head pains unknown and undetermined if direct relation to the radiation treatment. Have been diagnosed with 6 different kinds of migraines, including "daily chronic migraines". Some also noted as "ice pick" migraines (like being stabbed with an ice pick/steak knife).
Headaches are noted as potential side affects, especially so soon after radio treatments (definately within first 12-18 mos) of treatment. Your neurologist (yes, you are in the right hands) should be able to diagnose the type of headaches that you are experiencing and please make sure you are following up with the neuro-member of your radio-treatment team.
It is all too commonplace that folks tend to not follow up with the members of the radio-treatment teams once treatment is performed. It is ALL too important to make sure we do. They need to know what we are experiencing so they can track us... and for future patients. I'm noting this here for all past, current and future radio-patients. This has been noted for years. Understood that many may travel to have their radio-treatments performed and if that is the case and you seek follow up with a local neurologist, please have the neurologist communicate direct with the neuro-dr of the treating team. The treating team know the situation of the treatment intimately and will need to share info back and forth between the 2 to help provide the best follow up care possible.
Sorry.... had coffee this am.