Every drummer I’ve ever played with has eventually developed tendinitis (which leads to carpal tunnel if not addressed). The doctor has them take several weeks off, and then they have to follow a strict routine of stretching exercises for 10-15 mins before playing every day. Works every time. So if you play guitar, work at a desk, and play drums, you might be getting this same issue.
Try to solve your problems without pharmacy. Drugs only act against the symptoms, but not the cause.
Look into your eating habits, maybe there’s some stuff you react to? Carnivore diet may help or not, in some cases arthritis is facilitated by eating too much meat. Only way to find out is, to try for yourself.
There is a lot of stuff to control these „civilization diseases“ only by changing your diet. You can do detox treatments or medical fasting to get rid of pro-inflammatory factors in your body. Important is, the earlier you start, the better your body can get back to its normal functions.
Edit: look if your body is supplied with all nutrients it needs like vitamins etc. Vitamin D actually acts more like a hormone as a vitamin and most people have a too low level