I did Iodine for awhile at first but then switched to a little Colloidal Silver when he got diarrhea (not from Iodine) His stool has since gone back to normal.
He had a bad flea problem and still gets them on him. I've been doing extra cleaning up in the house since he's an indoor Cat and I don't know where the fleas are coming from, I never see any except on him.
Been using Herbal flea soap but I just ordered some enzyme shampoo for lice and scabies that may also help with the skin problem.
I'm going back to Iodine in his water and I hope it helps.
How is your Dog doing now? Did you put Iodine in her water and did it help?