Msaliceinpain so sorry this happened to you, you most definitely sound like you have Arachnoiditis and possibility a nipped nerve because it sounds so severe so fast. You need to get a Neurologist or Neurosurgeon to do that MRI on lumber with and without contrast so they can see and read it. My MRI's since my spinal surgery in 4/2015 all say Arachnoiditis can not be ruled out, will my highly respected Neurosurgeon put it on paper as a diagnose? Guess not, I also from surgery now have Cauda Equina. I am in pain everyday with allll types of new and horrible symptoms constantly popping up. The pain meds he gives me are a joke, I need to find a pain management Doctor that understands this disease and how debilitating it is and I just don't know, I'm so afraid they will only want to give me injections and I say h@ll no to that since they are one of the top causes of this disease. I so feel for you this takes your quality of life away and brings you to lows you never thought possible. I am on a Facebook support group called Arachnoiditis Everyday, it helps to at least learn more and not feel so alone. Everyone there talks about an expert on Arachnoiditis in California- Dr. Tennant I hope that's the correct spelling, I don't know if he's taking new patients but I guess it's worth a try looking him up. Best of luck to you.