Hi,
Welcome! Sorry to hear about your condition and the grief it's giving you. I'll be brief but I've had enough at the computer today and I'm getting sore.
I think you need to understand what's driving the condition. Some of us have an underlying GI problem which often niggles away and at other times it's a bit more obvious. Some of the guys diagnosed with AS later on get found out with IBD.
So you need to know if that's your "root" problem or not. Try the NSD for a few days, and then go LS and see what happens. It's no miracle cure but you notice that things are better. Then try re-introduing a really bad food, and see what happens, lower back, SI usually in me. I stubbled on the diet component years ago, after doing an elimination diet for IBS but we did n't realise it was starch, more white flour! Me dumb potatoes were indicated as well.
If so the last thing I would try is an NSAID of any type as they typically accelerate things.
What I would do is ask the rhemmy why are you proposing a DMARC, on the grounds of aggressiveness? etc.....
I think alot of Dr.s now respect patients that ask these questions. Listening in on some of the calls my rhemmie gets, things like being a responsible patient also have a bearing on prescribed treatments!
Good luck,
David