powerblackwolf,

You are reading some very OLD posts before I understood about upper neck injuries and vestibular injuries and how they can mimic concussion symptoms.

First, stop doing research. Doing excessive research is a manifestation of anxiety/OCD.

I was one of the first on this forum to start discussing the upper neck issues that were not discussed by the medical specialists until 5 years ago or so.

There are a few things that can cause symptoms.

1) PTSD flashbacks are a common occurrence. The brain remembers the time when the severe jolt caused symptoms. When the person starts focusing on head movement issues, the slightest sensation of head movement can trigger a replay/flashback of these memorized sensations and thoughts.

I have not even bumped my head in years but when I see somebody bump their head on TV, my gut clinches and I experience other flashback symptoms. I have similar reactions to seeing somebody injure their fingers or hands. I pull my hands in to my chest/belly. Guys 'feel it' when they see another man impacted in the groin....... These are all memorized responses, designed to be self-protective.

2) Jolts can trigger inflammatory responses without there being any physical injury, just strains of soft tissue.

3) Jolts/bumps can trigger upper cervical strain, vestibular issues by displacing the inner ear crystals, even just for a moment, disrupt vision in various ways, disrupt balance by anxiety responses conflicting with the communication between the eyes and vestibular system.

4) Jolts/bumps can be s surprise and cause a startle response. This can be alarming from an anxiety perspective or it can be disruptive to a train of though and cause confusion.

5) There could actually be enough trauma force to cause a real physical trauma. That is limited by the G forces experienced.

The vast majority of triggering jolts and bumps are from the 1-4 issues.

As Bud said long ago... As he recovered from his severe brain trauma, he had to learn to compare his reactions to jolts and bumps after his TBI to how he would have responded before his TBI.... That pot hole jolt would have been annoying before his TBI but it would not have caused any symptoms. After his TBI, he would react to that pot hole jolt until he reminded himself that pot hole jolts were never a problem before his TBI.

There has been a lot of research about increased risk of injury from a subsequent impact. It proves that the brain suffers very minimal if any loss of tolerance for bumps after it is given time to recover from inflammation and physical neck issues.

Second Impact Syndrome has nothing to do with increased sensitivity to movement from subsequent impacts. SIS relates to how a brain responds to serious impacts when it has not regained the ability to properly maintain cranial fluid pressures after a previous serious impact that disrupted the brain's ability to regulate cranial fluid pressures and flows.