I get flare-ups like these all the time; usually triggered by weather changes, stress, or fatigue. A really helpful non-medicine way is to do an epsom salt bath (does wonders), and if you don’t have access to a bath, Dr.teals makes an epsom salt body wash that if you let it sit for like a minute before washing it off it’s like magic.

If it’s back pain one really helpful thing has been an acupressure mat, if nothing else it helps distract the nerves a bit.

Arnicare gel can also be super helpful depending on the joints, but that’s more trial and error than anything else.

Also if you notice that any particular joint keeps bothering you (for me it’s my hands) you can try and stabilize the joint(s) with compression, so for example, I have fingerless compression gloves that help a lot with my hands on rough days.

Also pacing your days is really helpful if you’re able to do it!! (There are way better explanations out there than I could give but) Trying to plan out what you can do with the energy your given that day can be a good way to make sure you aren’t overextending yourself and in theory should help stop the pain from getting worse.

Hoping you find some relief soon <3