ok so, I have an arachnoid cyst in my left temporal lobe, numbness on the tops of my feet, first it was the right, but now the left as well and spreading up the back of my leg. Saturday I noticed my forehead was going numb. I have had a discectomy with fusion at C5 and C6 and have stenosis, and degeneratives discs...do you think this could be another back issue? the numbeness? or could it be something more systemic like MS?