Re: Why does my back pain go away when I am lying down?
YES, both sitting and standing put way more pressure on your spine than anything else. Sitting is the absolute worst, especially for long periods of time. When you sit, all of your upper body weight now has to be supported by your spine and rear end. When you stand, at least you can shift your body weight around, or move around, so that your legs are also helping to support you. Your spine is made of a bunch of vertebrae and discs, all on top and below one another. The purpose of discs are to cushion the space between the vertebrae. Whenever you stand or sit, all the vertebrae move closer together, which puts a lot of pressure on them. If there is a problem in the spine such as a pinched nerve or stenosis or degeneration, it's very likely that pain can worsen in these positions. Not always, but in many cases. When you lay down, all your body weight is pretty much distributed from head to toe, plus the fact that it usually stretches out your spine a little. I believe most people are a wee bit taller when they first wake up in the morning. This is because everything in the spine gets nice and stretched out.
Of course I'm not a doctor, but, just so you know, just because a doctor might say an MRI shows nothing wrong, it does not necessarily mean nothing is wrong. MRI's do not always show everything for one. Also, is your doctor going by your MRI report or just by looking at the MRIs themselves? Radiologists, who interpret MRI reports can be wrong; not to mention that it could be any kind of radiologist. It could be one that normally looks at brains, or arms, or some other body part. You have no way of knowing. Also, even though my spine MRI's showed many things wrong, when I went to have surgery, there were even more things found that never showed up on MRI. And yet another point...just because it "appears", like "minor" stenosis", to be minor, that in no way can dictate how much pain and symptoms one person can feel. Pain is totally subjective, so....you could have one person with "minor" results on MRI be in excruciating pain and then have another person with a huge herniation have no pain at all, not even knowing they had a huge herniation (such as in incidental findings when maybe they had an MRI for something else done and this just happened to show up). The worst thing is, doctors know all this, they SHOULD know all this. I have read this sooo many times in medical articles and such.
It could very well be that your L5/S1 is causing your problems, however, just my opinion, it does sound to me like there is something hitting a nerve when you stand and sit. If you had surgery before, it could very well be scar tissue. I know I have that problem. When you had your MRI, was it done both with and without contrast?