it sure is a mite infection and a bad one also..and like i said this didnt just come about but you have been watching this happen...did she mention better cleaning habits
in and around the cage ????
ive told you before to THOROUGHLY
clean the cage and everything in it by breaking it all down and taking everything out and disenfecting it ...and the area around the cage as well...also washing any cage covers...
use ACV ...apple cider vinegar...and be sure to get into the cracks of things as these lil buggs are extremely tiny and get into EVERYTHING...
use a good soft scrub brush and make sure any wooden perches are completely dry before putting back or you will deal with bumble foot again possibly.
THANKS for the vet update info...but she should of mentioned to also clean up or that medicine wont do ANY GOOD .