The following advice and treatment are commonly given for a sudden-onset (acute) bout of nonspecific low back pain.
Also, sleep in the most naturally comfortable position on whatever is the most comfortable surface. Advice given in the past used to be to sleep on a firm mattress. However, there is no evidence to say that a firm mattress is better than any other type of mattress for people with low back pain. Some people find that a small firm pillow between the knees when sleeping on the side helps to ease symptoms at night.
If you have a job, aim to get back to work as soon as possible. There is no need to wait for complete freedom from pain before returning to work. Returning to work often helps to relieve pain by getting back to a normal pattern of activity and providing a distraction from the pain.
In the past, advice had been to rest until the pain eases. It is now known that this was wrong. The evidence from research trials is that you are likely to recover more quickly by getting moving again, and getting back to work as soon as possible. Also, you are less likely to develop persistent (chronic) back pain if you keep active when you have back pain rather than rest a lot.
Keeping active
Continue with normal activities as much as possible. This may not be possible at first if the pain is very bad. However, move around as soon as you are able, and get back into normal activities as soon as you can. As a rule, don't do anything that causes a lot of pain. However, you will have to accept some discomfort when you are trying to keep active. Setting a new goal each day may be a good idea. For example, walking around the house on one day, a walk to the shops the next, etc.Also, sleep in the most naturally comfortable position on whatever is the most comfortable surface. Advice given in the past used to be to sleep on a firm mattress. However, there is no evidence to say that a firm mattress is better than any other type of mattress for people with low back pain. Some people find that a small firm pillow between the knees when sleeping on the side helps to ease symptoms at night.
If you have a job, aim to get back to work as soon as possible. There is no need to wait for complete freedom from pain before returning to work. Returning to work often helps to relieve pain by getting back to a normal pattern of activity and providing a distraction from the pain.
In the past, advice had been to rest until the pain eases. It is now known that this was wrong. The evidence from research trials is that you are likely to recover more quickly by getting moving again, and getting back to work as soon as possible. Also, you are less likely to develop persistent (chronic) back pain if you keep active when you have back pain rather than rest a lot.

