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.
I have just been diagnosed with Sjogren's. From what I've read your symptoms fit the symptoms of Sjogren's. I would suggest you see a rheumatologist and have a blood test to look specifically for Sjogren's. I hopeyou find some relief soon.
Mike