Just quickly looked, as I don’t have much free time these days (who does!) On the neck one taken recently, I can see one or two things that are probably contributing to your symptoms
1. Low-lying cerebellar tonsils (sometimes termed Chiari 0)
2. Loss of ‘lordosis’ of upper cervical spine (loss of natural C shape)
3. Signal difference on spinal cord between C5 and C6 (possible cervical disk issue)
Also I am suspicious that the distance between C1 and C2 has widened since your fall 7 years ago, so there’s possibly some instability there.
Check what position your head is in when you experience the tingling, If it’s when your chin is down (head in flexion), there’s probably a need for a Philadelphia collar (NOT a soft collar). I would also suggest a good multivitamin (including all the B vits to help with your chronic fatigue and to boost your immune system) and additionally some form of Vit C regularly through the day to help repair weak tissue.
Hope some of this helps.