Lower back pain when leaning back
There are many, many diagnoses for those who suffer from low back pain, and they can all present with very similar signs and symptoms. One such symptom is pain when leaning back. Two typical examples of this type of pain that would require completely different treatment procedures are facet joint pain and a bulging disc. If facet joint pain is your problem, it is because the joints in your back are “pushed against each other” when you lean back. The goal of treatment here would be to address any muscle imbalance in the lower back and stretch and strengthen as needed. In addition, gentle mobilization of the joints helps to relieve them and so...

Lower back pain when leaning back
There are many, many diagnoses for those who suffer from low back pain, and they can all present with very similar signs and symptoms. One such symptom is pain when leaning back. Two typical examples of this type of pain that would require completely different treatment procedures are facet joint pain and a bulging disc.
If facet joint pain is your problem, it is because the joints in your back are “pushed against each other” when you lean back. The goal of treatment here would be to address any muscle imbalance in the lower back and stretch and strengthen as needed. In addition, gentle mobilization of the joints helps to relieve pressure on them and thus promote the healing process. A simple exercise to start with can be to lie on your back and then gently press your knees into your chest.
However, if it is a bulging disc that is causing your pain, it is likely due to the disc being “pinched” when you lean back, causing you pain. The irony is that in this case, some type of stretching exercise (leaning back) will form the basis of your treatment. This probably starts with lying on your stomach little and often throughout the day. From here, you can move on to gentle stretching exercises while lying on your stomach.
It is important to note here that what may seem like similar problems, as both cause pain when reclining, actually require completely different treatment techniques to resolve the problem.
If you were to perform the exercises intended for a facet joint problem on a bulging disc or vice versa, you will only make your pain worse.
No treatment or exercise program should make your pain worse, if this is the case then something needs to change. Maybe you're doing the right exercises, but you're just a little too strong at first. It could also be that you are simply doing the wrong exercises for your problem.
Either way, if the pain makes your pain worse, you'll need to change what you're doing by either easing up or trying a different exercise.
Inspired by Paul Boxcer