Looks like he has whole in head the disease
On the bright side, the scars make him look badass..
Glad he healed up.. You did a good job bringing him back
I've had a similar experience with geos. What i did to fully cured the hith in the long run was to scrape or surgically dig the holes out somewhat bigger with a scalpel and then fill the holes with the proper meds. Geos are somewhat docile so didn't need to sedate but for a wolf with sharp teeth beware, i would appoach with caution.Did my best. Biggest worry is that the scars and holes have not fully healed and therefore he’s more likely to have it come back.