High+anax10yrs, other antibodies neg.recurring flares: joint pain, lethargy, sicca, chest pain, rashes.all sun induced.responds to 10mg prednis. best dx?

Guessing: Too difficult to answer. Rheumatologic disease is often recognized by subtle characteristics of disease and progression over time. Can't be seen or well appreciated on line. Symptoms are often vague and overlap. Labs are helpful but not diagnostic. Best "test" is consistent follow up with rheumatologist and best diagnosis is what they give you.