Side Pain in the Lower Back: What It Can Mean and What to Do

Pain beside the spine after lifting, twisting, or unfamiliar activity often involves muscles or connective tissue. Pain that worsens with arching or turning may involve the small joints at the back of the spine. Burning pain, tingling, numbness, or pain travelling into a leg can occur when a disc or nearby nerve is irritated. Pain near one buttock or the back of the pelvis can be associated with the sacroiliac joint. These patterns overlap, and the location alone cannot identify a cause.

A clinician may ask when the pain began, what movements change it, whether it reaches the leg, and whether you have fever, urinary symptoms, or bowel changes. Examination helps distinguish a mechanical back problem from a condition needing other evaluation.

Keep gently active if movement is tolerable, changing position regularly rather than staying in bed. Short walks and comfortable mobility exercises can prevent stiffness. For a recent strain, a wrapped cold pack may calm soreness; gentle warmth may feel better once stiffness is the main problem. Avoid heavy lifting and repeated twisting for now, then return to activity gradually. A physiotherapist can assess strength, hip movement, lifting technique, and posture and tailor exercises.

Do not start pain medicine if you have a medical condition, take interacting medicines, or are pregnant without checking with a pharmacist or clinician. Persistent or recurring pain deserves an assessment for options such as [Non-Specific Low Back Pain](/conditions/non-specific-low-back-pain/) or [Muscle Strain](/conditions/muscle-strain/).

Arrange prompt medical care for severe pain after a fall, new leg weakness, numbness around the groin, loss of bladder or bowel control, fever, unexplained weight loss, or pain that is constant and worsening. Seek urgent help if back pain comes with feeling very unwell, fainting, or new abdominal or urinary symptoms. If the pain is not settling, keeps returning, or limits sleep and daily tasks, book an evaluation.

Ask: Which movements or examination findings suggest a muscle, joint, disc, or pelvic source? Do I need a scan, or would a guided exercise plan be more useful first? Which activities should I modify, and what warning signs should change the plan?