Thanks for the replies. I discussed about Canesten with a pharmacist, and she told me to use Nizoral for another week so the ringworm doesn't get resistent to this drug. If Nizoral doesn't work after another one or two weeks, I should try Canesten. Thank you.
I'd like to talk to my vet about itraconazole or fluconazole, thanks for the information. I hope I don't offend him by suggesting any drug to him lol. He is very good in treating difficult surgical cases, and he has saved Joshua's life years ago after Joshua had been given up by 20 vets.
I still haven't given Ketoconazole to Joshua yet because I'm trying to see if there is a milder way to cure, hoping he might develop antibody to fight the ringworm... (My family has started yelling at me because of this.) Is it possible?
I'm also looking into anything that can help boost his immunity. Does anyone here have any suggestion? I heard a few drops of vinegar in water might help.. Has anyone tried other methods?
I'm not sure if Jushua has any improvement. The entire patch is a bit more red than other part of skin, and it itches. Whenever I touch that part, he would keep licking his Elisabeth collar. I thought ringworm is supposed to have ring shape, but besides two smaller red circles, his groin has entire patch of redness with tiny scattered black specks, which can be seen only under strong light. Has anyone seen that before?