I've managed to make my anxiety worse by recently bumping my head on a towel rail in an unfamiliar hotel, it wasn't hard enough to cause any pain or swelling, but it made me go into panic/dissociation, then I noticed a sharp drop in mood later on - like an instant descent into depression came over me. I've felt dizzy and foggy-minded since and the head-injury doubts have crept in again.

It seems my nervous system is very sensitive to any perceived impact scenarios.

If this had happened 5 years ago, I would never have noticed, so part of me can see that logic, while the fear is telling me "yes, but your brain is much more sensitive now to any knocks"