Greetings from someone who knows the itch!!

Dyshidrosis = Pompholyx. No matter what you call it, it sucks.
I'm lucky - I usually have it on my hands. I had it on my feet once and it was **awful.** I remember constantly taking my shoes off at work so I could scratch... Dude, I feel for ya.
We've got another member on here who sounds like he had your exact same problem... once the fungus was gone, the blisters cleared up as well. In his case it was athlete's foot. (Can you imagine? How long did it take the doctor to figure that out, Matty?)
I'm the one that swears by apple cider vinegar soaks, the colder the better. They have helped me immensely. The vinegar softens the cracks, and the cold quells the itch. Between that and avoiding my triggers, this crap is actually pretty manageable.
Keep us updated. I've got my fingers crossed for ya.