Oh, poor Billy

I can sure relate to this as Jordie has this; yeast and hypothyroid.
Yeast (malasezzia) and hypothyroid issues often go hand in hand, so good on you and your vet for doing a thyroid panel.

And starting on Nizoral is definitely the way to go as it is usually all through their systems so you do want to kill it. You may find it takes a couple of rounds of the Nizoral

Yes, you do want to bathe to get the yeast off his skin, Malaseb shampoo is the recommended one. You can also do a vinegar rinse, it's helpful in killing the surface yeast and soothing to itchy skin (50/50 mix, and no, he won't smell too much like a salad

)
Yeast does feed on sugars, and grains make sugar so you will want to get him on a grain free diet. Most all of them have potato as the carb. Arden Grange, JWB and Orijen do grain free foods. My guys have been on Taste of the Wild for about 4 years, which I understand you can get in the UK. Jordie is on a fish and potato formula.
As Nicola said, and acidophilus supplement, or you can use plain yogurt (plain, no sugars, fruit or sweeteners!), and I also recommend some enzymes too to help him get the most from his nutrition (yeast tends to eat it up so the dog doesn't really get enough

TBH, I kind of hope Billy is a bit low on his thyroid levels. When Jordie started on his thyroid meds it made a huge difference in his skin and itching. Not 100%, we still needed to do all of the above initially, but it gave us a big leg up

Now he pretty much maintains on the thyroid meds and the enzymes and acidophilus. He only has occasional flare ups with his ears now

And as an added bonus you may see a change for the better in Billys behaviour

Here's the "official dog pound photo" of Jordie before I got him, matted, scabby stinking mess

: (he looks great now but I don't have any photos


Here's a good article too, but the products she mentions are all US, I think:
http://www.greatdanelady.com/articles/systemic_yeast_mini_course.htmGood luck and keep us posted!
