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