Can anybody advise if they suffer from the above,if so can it be connected to Lupus ? Going to g.p. tomorrow to have it checked out again. I was there last week and the doctor was not sure what was causing the pain. I spoke to a Lupus nurse yesterday and she seemed to think it might be Sciatica. I have pain from one buttock going right down my leg to my ankle. I am finding it very difficult to walk at the moment. Your comments would be appreciated x.