Is Plaquenil the only suggested treatment? Did the Dr mention using anything else if that didn't have an effect? Is there a followup scheduled? It sounds like you need more care, either from this Dr or from another, as your condition/symptoms are not being well managed or alleviated.
I found that inflammation from my Lupus could cause my tingling/numb feet, and that other treatments, such as prednisone, Imuran, Cellcept, MTX were a great help. Sometimes these are used with Sjogren's as well -- maybe check out the Lupus 101 thread or the Diagnosing Lupus link in my signature to see if your symptoms match more closely to Lupus?
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2002DIAGNOSING LUPUS & HW's LUPUS 101
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