Many Americans suffer from illnesses that are difficult to diagnose (see "Misdiagnosed: What to Do When Your Doctor Doesn't Know"). We reveal seven ailments that give doctors trouble, identify their symptoms and tell you how to get help if you think you have one.
A chronic inflammatory disease
Symptoms: Fatigue; kidney, heart, and lung damage; rash; joint pain
Tests: Complete blood count to assess presence of anemia and a decreased white blood cell count; chest X-ray that may show pleurisy or lupus-related pneumonia; anti-double-stranded DNA test (anti-dsDNA), currently the most specific test for lupus; ANA and lupus erythematosus cell tests, which may show positive results in active lupus.
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