He's scratching the crap out of himself. All concentrated in the neck area. He ripped a bunch of fur out.
Vet thinks it's some kind of dust allergies so he's taking Zyrtec. But I think it's food so I'm cutting him off from all fish stuff. It's just going to take time to figure it out and get him to stop scratching. So I put this on him so he can't rip more fur out.