[QUOTE=fourmares;7386537]
Give him bute for a few days and see if the symptoms stop. If the vet won’t give you bute you can get asprin boluses for cattle.[/QUOTE]
Agree. You know your horse better than anyone. I can tell when my heart horses are NQR just by the expression on their faces.
Try 3-4 days of bute (or up the previcoxx) and see if it goes away. If it does, it’s pain related. I would then have a vet out to flex/jog/block and see if you can isolate WHERE the problem is. My guess is that cold/lack of movement is making the arthritis aggravate him more than typical, but perhaps you can do something to make him more comfortable if you can pinpoint the problem.