This has happened to me over the last year at the Boise VA Med Center. I won't mention names, but here's what happened.
Developed sores on my arms and legs, extremely itchy!! Figured I'd use over the counter medicine to try to cure it.
Saw my Psychiatrist (as I do every three months) for medicine. He noticed the sores and said "you look like some of the people that use meth". Gee, thanks Doc.
A couple of months later, I saw my team NP. She determined it was psoriasis and gave me some meds. She told me to call back if no improvement. This was around April 2016. Called back and the nurse took a note. I can see the note in E-Benefits (MyHeathyVet). Never heard from her. Told my anxiety and agoraphobia therapist about it. No help.
Decided "forget them" and went to a civilian dermatologist, who had a completely different diagnosis.
Pretty much the only thing I can count on from the VA is a physical and that my meds will continue to be lowered. I'm thinking that if Doc lowers my meds once more, I'll seek civilian treatment. I don't need a Doc that belittles me and doesn't meet my needs.
My suggestion to you would be to document it and try to elevate it. Then seek treatment outside of the VA.