I can absolutely get behind what Hv is saying. The same thing happened with my husband when he was battling a ton of digestive issues and reflux. He started getting athlete's foot, and then some other fungal situations started to appear. Why does this occur due to the digestive tract? I have no idea, but once we corrected that reflux issue, all the rest seemed to fall into place.
Hv has some posts here on firing up the digestive track. Oddly for us many years ago we did a number of liver flushes. While I'm now not enamored with the flush, I am now thinking that the process of cleaning out our system with Epsom Salts was the key, but yikes, that's a hard way to go on the body. So in essence we did a major cleanse of our pipes.
I don't have the background of Hv, but wanted to tell you about the similar problem with my husband.