YES, it is caused by lyme;
at the end, the skin gets very "thin", like parchment, you sometimes see the small blood vessels shinig through the skin which can give this areas a "bluish gleam";
the most / well- known form and location is on the fingers - it`s calles "madonna - fingers" at least here in europe, but you can have it everywhere, and it looks like a dermatitis;
that was the way they found out I have Lyme...... a dermatologist found several parts of my skin looking "strange"....I always thought this was Neurodermitis or came along with allergies I have; the doc asked my how I felt during the last time, maybe years, if I felt sick, was tired, had health problems which could not be explained ...I said yes,.. we made a test (elisa / westernblod) and I came out positive....
I have a link with pictures, I will try to find this link and post it immediatelly...
thanks for your posting!!!