In my case it was the Mayo that gave this disease when a herniated disc repair went bad as then punctured the arachnoid membrain and cause a major spine leak. I had a bulge the size of a grapefruit at the base of from the leak and took three operations to fix. Now I have Arachnoiditis which they saying I need a stimulator only because I asked for a MRI of my lumbar area with contrast to discover this terrible incurable disease. No help from any doctors there and all they said it won't nessesary get worst. I wrong they are will my increase in pain the rest my life. If gets where I am bed ridden I got my pills ready for good by sleep.