One of the ways Drs get more data to help find the correct diagnosis is to see how your body and your symptoms react to certain medications such as hydroxychloroquine (Plaquenil). Quite often Plaquenil is used before the final diagnosis is made -- note that it does often take 2-3 months to see any effects.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2002DIAGNOSING LUPUS & HW's LUPUS 101
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