I was on Cymbalta for a while, and while it was helping the depression I also noticed a decrease in my fibromyalgia pain. I maxed out on it though and then had to switch to something else.
I wonder if the neck, shoulder pain from tense muscles is related to the anxiety. Just my 2 cents.

BTW- Symbiax (sp?) is a combo of prozac and zyprexa and yes the atypical antipsychotics are associated with changes in blood sugar levels.