Need Advice ASAP

[Lija]

That is not a cut, its bacterial infection, the lump looks like an abscess that now has rubtured. He is still eating because an infection is still localized. You need to put him in a quarantine set up, on clean changed daily wet papertowels, with something hanging so he can hide under, all sided covered. Treatment - 2-3xday apply polisporin/neosporin or if you can get hold of flamazine, whatever that is without painkillers. It should get better within five days, if no better within 5 days you need a vet for systemic antibiotics.

[mermaidheather]

So, just an update. He has made a full recovery. The open sores have closed, and he is happy again.

[monster]

Glad to hear he made it through and was able to heal for you and become his old self.