I am a month out from a laminectomy and posterior fusion at L4-L5 for severe spinal stenosis with some cauda equina impingement. I had some difficulties with hypotension and urinary retention after the surgery and ended up spending 6 days in the hospital. I have steadily improved and no longer have a need for anything stronger than Tylenol. All of my pre op neurogenic claudication and other sciatic symptoms are gone. What I continue to have difficulty with is my night time sleep patterns. I don't stay asleep longer than two hours at a time and what sleep i do have is very light and superficial. I do not feel rested in the morning. I avoid caffeine, napping in the daytime, etc., but that does not seem to help me sleep better at night. I was wondering if others have experienced anything similar, and what might have helped to alleviate the problem. I feel like something in my brain has changed and I'm a little worried.