I have heard that the "water running down your legs" symptom can be caused by anachroiditis. This is basically a condition that affects the nerves in your spine. Did you have any steroid shots, chemotherapy, etc near your back? There is a retired doctor (Dr. Tennant) that does research in this area and has a medicine protocol that is supposed to help. Here is his website http://arachnoiditishope.com/ . Maybe this could help.