Pain affecting the back often restrict movement. The pain usually lasts for only a week or so but can recur in some people.
Back pain is usually caused by minor damage to the ligaments and muscles in the back because muscles and ligaments supports most of the body’s weight from movements such as bending, twisting and stretching. Less commonly, lower back pain may result from an underlying disorder such as prolapsed intervertebral disc in the spine.
Investigations for back pain, such as x-rays, CT scan or MRI sometimes reveal abnormalities such as disc prolapse that may require surgical treatment.
In most cases, back pain can be treated with over-the-counter painkillers, nonsteroidal anti-inflammatory drugs or muscle-relaxant drugs. Other treatments include acupuncture, spinal injection, exercise or spinal manipulation. https://www.nhs.uk/conditions/back-pain/