I am referring to the impact in the disks in the neck. Jarring a stiff neck can cause inflammation in the neck. The spine can lose its resilience. When the spine is resilient, it absorbs impacts. When it is not, it gets inflamed. That inflammation can disrupt nerve function and cause muscle spasms that lead to headaches. It can also decrease blood flow that can cause brain fog and fatigue.

It is not healthy to look for reasons to obsess about additional brain damage.