Started with sciatica yesterday.It runs down to the back of my knee, I have had it before, but decided to run this p.m. as the ice had gone. The first part of the run was downhill and it was real agony, though I would have to stop due to the pain. However, on the flat and running uphill the pain disappeared. Normally I hate going uphill but it was such a relief. Not sure if I am doing the right thing running with this, but going to keep going for now.