Sorry you haven't been able to get a diagnosis - sounds like you haven't been given any treatment, either? Sometimes with this many symptoms they will treat you even without diagnosis just to see if it helps. If you feel comfortable with your rheumy, you might want to suggest that.
Or find another rheumy for a second opinion - one thing that is sometimes helpful is to check with the Lupus Org at www.lupus.org
to find your local chapter of the organization. Then check in with the local chapter to see which local Drs are active on the advisory board -- these are generally the Drs most interested in and most experienced with Lupus (and other auto-immune diseases) in your area.
Meanwhile, Biotene has a line of products for dry mouth. You can use lubricating
eye drops (NOT medicated, no preservatives) to help ease the scratchiness. Tears Natural II is one product that comes to mind.
It's also helpful to eat well (no huge sugar or carb binges), get mild exercise, and get restful sleep. Sometimes we don't realize how poorly we are doing these things until we take a close look at our lives.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2000DIAGNOSING LUPUS & HW's LUPUS 101
"Life is far too important to be taken seriously." - Oscar Wilde