What should you know about paraspinal muscle strain?

These muscles help hold your trunk upright and control bending and rotation. A sudden lift, awkward twist, fall, or repeated loading can irritate their fibres. Pain is often felt on one or both sides of the back and may worsen with movement, coughing, or prolonged sitting. A back muscle spasm can make the area feel firm or locked. The pattern can overlap with lower back pain, so an examination helps distinguish a muscle problem from joint, disc, or nerve conditions.

For the first few days, reduce the activity that triggered the pain while continuing gentle movement within comfort. Short walks and changing position can prevent stiffness. Cold or warmth may help; use a cloth barrier and stop if the skin becomes irritated. A clinician or pharmacist can advise whether a pain reliever is suitable for you, especially if you have stomach, kidney, heart, pregnancy, or medication concerns. As symptoms settle, physiotherapy can guide gradual trunk, hip, and lifting exercises. Return to heavier work or sport in stages rather than testing the painful movement repeatedly.

Arrange medical assessment if pain follows a significant injury, keeps worsening, limits normal walking, or does not begin to settle with simple care. Seek urgent help for new leg weakness, numbness around the inner thighs or genitals, loss of bladder or bowel control, fever with severe back pain, or unexplained weight loss. These features need assessment because they are not typical of an uncomplicated muscle strain.

Could the pain be coming from the paraspinal muscles or another part of the spine? Which movements should I temporarily avoid? When can I restart work, driving, exercise, or lifting? Would physiotherapy or imaging add useful information?