Wow I experienced similar symptoms last 2 months.
Again MRI on the head (MRI plus MR Angiography and Venography)showed nothing....


But... MRI on the neck was different... disc herniations on almost every level. In addition, straightened cervical lordosis (aka as military neck).


I also made duplex Doppler sonography where there was minimal difference in left and right para-vertebral arteries. Doctors say this is not a problem, but I am worried a lot!