PTHS sounds much different than PTSD although I would not be surprised if many with PTSD also suffer from PTHS. PTSD disrupts the way the brain thinks. PTHS changes the way the body responds to sensory stimuli. In PTHS, the brain misreads sensory signals as pain signals. In PTSD, the brain in more likely to respond to sensory stimuli with a fight or flight mode or other anxiety.

It appears to be an extreme form of the sensory overload common to PCS subjects. Some with PCS may experience PTHS.

We need to be careful to not over-diagnose ourselves. This can lead to anxiety issues.

From what I found, PTHS is commonly treated with barbiturates. Not a benign treatment protocol.