Chaci,
I have posted in the past that I subscribe to Tufts University School of Veterinary Medicine Newsletter for the caring dog owner which I think is excellent for the lay person. This months issue discussed "It's the age of Specialists" and listed websites to find specialists. Reading your post made me remember this article so I looked up Dermatology.
This is the website for Dermatology and it might be helpful for you:
www.acvd.org
Let me know your thoughts after you go to the website.