I'm so glad my PCP does skin work. That's the only screening I'll subject myself to. No interest whatsoever in seeing a derm who would biopsy every one of my hundreds of moles. Considering the people I've seen coming out of dermatology offices, it looks like they take LITERALLY a shotgun approach! 
+1 on maybe seeing an allergist-immunologist. Even if the diagnosis is correct, isn't there some thinking nowadays that rosacea has an autoimmune component?
Speed comes from what you put behind you. - Judi Ketteler