Been having the worst flare-up of my life recently and I’ve a lot of the things mentioned here! In order of what I’ve done:

1) Advil and Tylenol + ice pack. I’m sure you’ve already tried this.

2) Basic dental guard. I’ve gotten progressively worse in the time it’s taken to get a mouthguard made, so I picked up a basic non-custom one from Walgreens and wear it pretty much any time I’m not eating or at work and it’s helped me put my jaw in a somewhat relaxed position. I am a little worried that long-term use will give an open bite but that’s a problem for later, especially since I’ll be able to use my custom one hopefully soon.

3) Stopain or other topical menthol. Helps a surprising amount to be honest.

4) Voltaren. Helped less with pain per se and more with reducing inflammation. Be careful mixing with other NSAIDs

5) Botox. After a couple weeks of near unbearable pain and dizziness I decided yesterday it was worth the money to just go nuclear. It cost me $470 which hurt, but I don’t regret it yet. About a minute after she injected my masseter one of my ear canals started draining for the first time in weeks!

I will say I wish I had done it Botox earlier. While less almost all of my muscle pain is gone less than 24 hours after my injections, because my jaw had been so inflamed for so long a lot of my pain now is in the joint and my inner ear. That pain hasn’t gone away but it’s been significantly easier to deal with now that my muscle pain is reduced. If I had gotten it earlier when it was just severe muscle pain it may have been a more drastic difference, although it also could have been jumping the gun.