Back muscle contusion: symptoms, care and warning signs

A back muscle contusion is a bruise caused by a direct impact that damages muscle fibres and small blood vessels without cutting the skin. It can cause local pain, tenderness, swelling, stiffness and skin discolouration. Most day-to-day care focuses on protecting the area, settling discomfort and gradually restoring comfortable movement.

This injury commonly follows a fall, collision or blow to the back. Pain is usually centred where the impact occurred and may increase when the bruised muscle contracts, stretches or is pressed. A deeper bruise may be sore before colour changes become visible. Symptoms extending down a limb, altered sensation or weakness are not explained by a simple local bruise and deserve assessment.

Stop the activity that caused the impact and avoid forceful stretching, heavy lifting or vigorous massage while the area is newly swollen and tender. A wrapped cold pack can be used for short, comfortable periods; keep fabric between the pack and skin. Continue gentle walking and easy movements that do not sharply increase pain rather than remaining in bed. As tenderness settles, increase normal activity in small steps. A pharmacist or clinician can help check whether a pain medicine is suitable with your health conditions and other medicines.

If pain or restricted movement is not steadily easing, a physiotherapist can examine strength and mobility and plan a graded return to work, exercise or sport.

Arrange prompt assessment if pain is severe or worsening, swelling expands, a firm lump develops, movement remains markedly limited, or you take blood-thinning medicine. Seek urgent care after a major impact or if you have trouble breathing, chest or abdominal pain, blood in the urine, faintness, new leg weakness or numbness, numbness around the groin, or loss of bladder or bowel control. These features can signal injury beyond a muscle bruise.

Ask whether the examination fits a muscle bruise or suggests injury to a rib, kidney, spine or another structure. You can also ask which movements are safe now, how to progress activity, whether your medicines affect bruising, and what change should trigger reassessment.