every time i eat certain foods the back of my head is pounding so bad i have to stop eating .. or find something softer to eat? why could this be? also a burning sensation at the top of my skull.. at times i can hear weird noises? like crackling .. or brittle bones.. or like my skull and brain are rubbing together? I can not look at the tv or look down for to long without the back of my head killing me.. i have gone to docs. NO ANSWERS!! I have been worried for a long time now.. does anyone else have this problem? It is like the base of my skull.. connecting to my neck. it gets so bad and to the point i can not hold my head up!? HELP!