Lupus: A wolf in sheep's clothing

Imagine a condition with symptoms that present differently in each person who has it and no currently-approved lab test can definitively confirm the diagnosis. Imagine that the symptoms can flare up and then mysteriously disappear, including fatigue, low-grade fevers, joint pain and mouth sores. All these symptoms overlap with multiple other conditions, further complicating a diagnosis. Imagine the best available method for diagnosing this ailment is a manual checklist of 11 criteria and, if the patient suffers from at least four, they receive a diagnosis on a scale of definite, probable or po...