Theoretically, if one had the majority of the symptoms for Lupus, and even tested positive for SLE via a ANA blood test result, but still hasn't had a "Butterfly" rash ever to appear -- could they still be medically diagnosed with Lupus?
My Rhematologist was telling me that he does not diagnose anyone with Lupus unless they eventually develop a "Butterfly rash" -- otherwise he just diagnoses people that have all the Lupus symptoms (except the Butterfly), even if they tested positive for Lupus in the blood-work, as "fibromyalgia." To him, the Butterfly rash is the single most important hinge that swings a fibromyalgia diagnosis to a lupus diagnosis.
But everywhere I look online, not everyone that is positive for Lupus will experience the "Butterfly" Rash. Right? Or am I wrong? Is there medical information that explains either way, and how paramount this "Butterfly" Rash is?