Firstly, all these claims are pure conjecture. You cannot certainly say that these new head incidents are not new concussions. I believe that completely not considering the possibility that the head sensitivity is real and not psychosomatic is irresponsible and could result in much suffering.

It would be most likely 100% psychosomatic if patients had a history of just one concussion, but everyone reporting this problem seems to have the exact same story. A male with 4-5 concussions starts to spiral downwards, getting more and more susceptible to new concussions. The process is gradual, each new incident taking away more vulnerability, which contrasts a classic psychosomatic story.

Considering that 40% of DOCTORS' diagnoses are predicted to be wrong, and our current knowledge and imaging technology regarding the brain is poor, it is bold to assume that multiple head injuries cannot result in vulnerability to new ones. Didn't the NFL doctors believe CTE was psychosomatic until science caught up?

I am not sure if my hypopituitarism is involved with the sensitivity, but the fact that the PCS symptoms and head sensitivity shared the exact same onset gives me hope. I had ~ 5 concussions prior without head sensitivity and without PCS symptoms, but a very minor one set off the whole problem.

Did I miss something? What claims?

There are at least 4 reasons people experience a return of concussion symptoms.

1. Another impact causing another concussion

2. An impact causing a whiplash trauma

3. A PTSD or anxiety driven flashback that causes the mind to replay concussions symptoms, both physiological and emotional/psychological
Many in this group have a history of anxiety or depression or OCD or perfectionism or need to be in control.

4. An event that is over-stimulating, loud noises, too many voices, visual over-stimulation, a job task that is fatiguing with these excessive stimulations, and any of a myriad of these stimulations.

Some may have other underlying conditions with hormones or blood sugar or high blood pressure, etc.

Some may have done some innocuous activity that they would never expect to be a trigger. A late night or a bad night's sleep. Having a few drinks and getting a buzz. Even a lot of exciting and happy activities can be taxing on a compromised brain.

Try to pay attention to what your body, mind and brain is telling you. Learning to moderate your daily life to limit triggers is important.