I have had the same dull headache and heavy headed feeling for a year now! Also a great deal of stiffness in my cranial muscles, especially in the forehead and top of head, and even eyes (my eyes bounce back and forth involuntarily sometimes when I cut my eyes left or right).
I have come to the conclusion that, given basically normal MRI and MRA's of the brain and neck (except the kinking in my internal carotid artery), and lack of ideas from my doctor/headache specialist, that the cause of my headache is either 1 of 2 things. Either severe muscle tension in my upper neck from years of weight lifting and this is being referred to my forehead, or its being cause by severe turbinate disfunction (visual inspection confirms the middle turbinates are in constant contact with my inner nasal wall). My doctors say that nasal headaches are only "theories" and that a turbinectomy would be at my own risk of failure. I will be receiving intense massage therapy in the meantime. Nasal steroids were not helpful at all after 3 months of everyday use (tried 2 kinds).
1) Is there any way to prove nasal headaches without surgery?
2) Do you think I should have a turbinectomy? I won't hold you to it if you're wrong, just what do you think?
3) Also, I know this is incomplete imaging and informal but if you have time would you peek at these images and tell me if you see anything unusual whatsoever?
4) do you think extreme muscle tension deep down in the cerv/cranial junction could cause?
A few MRA images:
http://hometown.aol.com/qwertysandy243/index.htm