Here the blood hasn't had a chance to catch up with your brain. This can make you dizzy and faint. Any blow to the head, even a severe whiplash can cause some swelling in the circuits and make balancing a problem. We can do a test called Electronystagmography and tell if the neck is a causal factor or if it is Benign Positional Vertigo. Balance Keeping one's balance is a highly complex activity.
Balance consists of four elements.
Your eyes can tell you which way is up. In the inner ear are three water tubes called semicircular canals. They go in 3 different directions. Think of them as a carpenter's ruler with a bubble. The bubble goes up when you tilt your head.