Thanks for the replies.
I did try to do some research before seeing this person (actually before scheduling them, as I had not come across this before). Apparently it is somewhat rare and often from unknown causes, though stress seems to be one of the frequent contributing factors- go figure.
Since most of the work I usually do is myofascial, I pretty much stuck to that. Probably about the first 40 minutes of the 60 were on the neck, and I tried to cover a lot of ground in that area: Posterior- traps, splenius, suboccs., paraspinals, lev. scap., etc. Anteriorly- infra and supra hyoids (gentle fascial work in both cases) and was able to get into the longus a LITTLE bit, but didn't want to push it too much- I could only get ever so slightly up onto the anterior spine.
Last 20 or so minutes were more general/moderately deep back.
Checked in with client two days later, and unfortunately, they did not feel much difference. I could definitely tell there was a lot of softening, but there is a long way to go. They are coming in again, and I imagine spending a little more time trying to loosen up the LB and UB, but still a good chunk on the NK. I am really hoping that they are able to experience some benefit before too much frustration sets in. I know and they know that it can take time, but even though one can know that in the head, it is sometimes difficult to realize that in the heart.
So I am still open to thoughts and suggestions as to what might be worth trying for this person.
Move on as quickly as you can to people who get you and what you do. -Robert Chute