Sjogren's Syndrome Support Group
Sjogren's syndrome is an autoimmune disorder in which immune cells attack and destroy the exocrine glands that produce tears and saliva. It also associated with rheumatic disorders such as rheumatoid arthritis, and it is rheumatoid factor positive in 90 percent of cases.
Thyroid disease - especially Hashimoto's which is yet another auto-immune disease - can cause many of your symptoms.
I'm not saying you don't have the dx's you already have, but I'm saying if some of them are thyroid related they could be treated and possibly resolve.