since the age of roughly 16, ive had this kind of dullness to the head, almost heavy headed. over the years (im 18 now) it has got worse. when i sleep i dont wake up feeling refreshed, but basically the same as before i go to sleep, just without the urge to sleep. i get the feeling that i need to wake up
It sometimes makes thinking and general day to day activities strenuous. some things such as hangovers and colds/flu increase the "numbness".
I havnt been to the doctors about it yet, but im tempted to now as im off to uni soon.