I've been having this off and on for a few weeks and now I am convinced it's a brain tumor. I just had a clear brain MRI last year so I feel like I am being irrational but I just cant shake the thought. (Maybe the older MRI machine missed it. Maybe the radiologist missed it) Its not really numbness more of a light tingling in left cheek and nose with a heat sensation. What could be causing this? Does anyone else get this?