I have not heard of arthritis causing a fever. If you have Lupus, your autoimmune system is already overactive, so if you get a fever of 100.2 it's more like a fever of 104 in a normal person. My recommendation is to call the Dr if you aren't significantly better within 24 hours.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2000DIAGNOSING LUPUS & HW's LUPUS 101
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