I also have bad headaches and migraines, as well as continuous neck pain. I have bilateral TOS, worse on the left side. I had TOS surgery on my left side nine years ago. It simply made things worse and resulted in mingraines, which I did not have prior to surgery. My surgeon and neurologist thought surgery would relieve the headaches. So, I suppose there is not uniformity of opinion on that matter.

Good luck to your friend.

Take care,
Kelly