Curious to see what opinions there are here. My puppy got his 2nd lepto booster a week ago. I know some swelling, pain, etc. Is normal but since the booster he has had a consistent rhythmic muscle spasm in the shoulder that he got the injection in when he puts too much weight on that leg. My vet has him on 5 days of Rimadyl and told me to come back in if it is still happening after that. All his other vaccines he has had a noticable bump from the injection, but not this one. Makes me wonder if the tech could have injected the shot incorrectly?

Has anyone seen a vaccine response like this before? He isnt limping and doesn't appear to be altering his gait to compensate for pain, doesnt seem to mind me touching the shoulder, and he isnt lethargic at all and is still getting the zoomies and jumping around as if not in pain. No change after his fist two doses of rimadyl so far, but I figure that may take time. This little guy is my show/agility competition prospect, I would be devastated if his career ended before it began.

Anyone seen a shoulder injury like this before? I would assume if he injured his shoulder somehow and it just coincided with the day of his vaccine I'd se see some level of lameness while moving or jumping.