Have you used any Swiffer products or that powder carpet refresher? Most likely not and wouldn't it be simple if it was something to identify as easy as that and just stop using it, no more itching!
Rusty sufferes from seasonal enviromental allergies...his is the Fall season. The rest of the year he's fine. His armpits have looked like that before. He will also get itchy when our heat kicks on & it's dry...so I bought a humidifer which actually helps the whole family.
I have never done any allergy testing, our vet didn't think it was worth it because he considers his to be mild. It seems when most people get the allergy testing done a whole laundry list of stuff comes back...the dog is allergic to life in general...now what
If it is indeed enviromental allergies here's some things that helped my boy:
-air purifier (this helps the whole family)
-wiping him down with a damp towel
-cleaning the carpets monthy (bought my own cleaner)
-Benedryl as needed
Recently I decided to try raw local
honey (it must be local to you, within 50 miles, the closer the better). He gets a teaspoon in the AM & again in the PM and on day 10 his itching started to decrease drastically. We are now just over two weeks into the raw honey and he's hardly itching at all.
Now I'm not saying this will work for everyone and I was spectacle but I am beyond pleased.
I would just really keep a close eye on those areas he's itching that it doesn't settle into a bacterial infection.
Sorry for the long ramble