Neither, of course, can you rely on a Web page to tell you whether you have Sjogren's Syndrome!
The specialists who most commonly diagnose Sjogren's Syndrome are rheumatologists -- also known as arthritis doctors. Yes, it can seem very, very odd that a specialist in what we think of as joint pain would also be the specialist for the dryness symptoms of Sjogren's Syndrome -- but both sets of problems can have the same (poorly understood) underlying cause, an autoimmune attack on the body itself.
In addition, a well-informed dentist, ophthalmologist or other practitioner can make the diagnosis.
To increase your odds of getting examined by a practitioner
who is well-informed about Sjogren's Syndrome, see
Finding top-notch medical help for Sjogren's Syndrome