Full disclosure I have been dealing with fear of brain tumor/having a stroke over last few weeks as I constantly feel sort of light headed and of balance. Now I have realized I have neck tightness. My wife has said it's probably due to the way I sit/always looking down at my phone could this cause these symptoms? I also have tmj and am a constant teeth grinder. I have also noticed the vessels in my eyes are very prevalent when I look closely any advice?