possibly some vertebral artery symptoms??
from misalignments or even muscle spasms?
I had all of these at the worst of my work injury.
[VERTEBRAL ARTERY
DIZZINESS, LIGHTHEADNESS
VERTIGO, SYNCOPE
DIPLOPIA, DYSARTHRIA, DYSPHONIA, DYSPHAGIA
TINNITUS, EAR PAIN]
the info above is from a thoracic outlet syndrome website -
http://www.tos-syndrome.com/old1/newpage12.htm
but you can find more on vertebral artery symptoms with a web search