Well I learn something new everyday. At last I understand why my ESR/ PV and CRP levels are often so high despite no swollen joints!

"People with Sjögren’s syndrome often have very high ESR levels regardless of whether they feel well or ill. In Sjögren’s syndrome, the ESR or other measurements of inflammation such as C-reactive protein (CRP) aren't very useful in assessing how active the condition is – unlike in lupus or rheumatoid arthritis."

http://www.arthritisresearchuk.org/a...diagnosis.aspx