Low back pain (LBP) is the most burdensome musculoskeletal condition worldwide [7], affects all ages [17], and contributes to inequality globally [2]. Most individuals experience LBP at least once and for many, LBP is a lifelong problem with trajectories marked by fluctuations [1,14,15,18,28]. Terms such as acute, subacute and chronic, provide little or no information regarding symptom variation, and don't discriminate between chronic LBP and multiple acute periods. The terms episodes [10,12,30], recurrences [12,24] and flares [23,27,31] are used to describe fluctuations, and may characterize LBP trajectories, but it is unclear how they are defined and differ.
from The Journal of Pain https://ift.tt/2ulDtn4
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