J C
Favorite Answer
Call the vet and ask. It is likely a local inflammation from the shot, but take a picture, call the vet on Monday, and ask. They will probably want to see the cyst, but often a picture (if it's clear) is a good way to start.
Vivien
The best answer would be to take him to the vet. Good luck and best wishes
paul
wellness check with your vet
Sharon
take him back to the vet immediately. This is always a potential problem with steroids, and must be treated
Anonymous
Yes...go see the vet and have it excised or at least drained. Sooner the better.