RT Journal Article SR Electronic T1 Tired, aching, ANA-positive: Does your patient have lupus or fibromyalgia? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 143 OP 152 VO 69 IS 2 A1 Blumenthal, David E. YR 2002 UL http://www.ccjm.org/content/69/2/143.abstract AB The symptoms of fibromyalgia and lupus can be similar, but the treatments are very different. Although the antinuclear antibody (ANA) test has often been used to make the distinction, this approach has its pitfalls. This paper offers strategies for more accurate diagnosis.