What should you know about sharp pain in lower leg at night?

Night pain may follow muscle fatigue, cramps, a tendon or joint problem, nerve irritation, or an injury that is still settling. Note whether the pain is in the shin, calf, knee, or ankle; whether walking or touch brings it on; and whether it improves after changing position. A recent increase in running, walking, or impact activity can overload the lower leg. A stress fracture can cause focused bone pain that becomes more noticeable with activity and may persist at rest, but only an assessment can sort this from other causes.

Swelling, warmth, redness, breathlessness, fever, or a new change in walking pattern makes the situation more urgent. Night pain that repeatedly interrupts sleep also merits clinical review.

Stop impact exercise until the cause is clearer and use a comfortable position with the leg supported. Gentle ankle movement may help if it does not increase pain. Avoid deep massage over a tender or swollen area. Check the skin and compare both legs for swelling, colour, or temperature changes. Write down when the pain starts, how long it lasts, and any daytime symptoms. A clinician can advise on pain relief after considering your medicines and health history.

Seek emergency help for sudden calf swelling with warmth or redness, severe unexplained pain, or lower-leg pain with chest pain, faintness, or breathlessness. Seek urgent assessment after a fall or blow if you cannot bear weight, the leg looks deformed, or pain is severe. Arrange a timely appointment for repeated night waking, focal bone tenderness, persistent swelling, fever, numbness, or weakness.

Could this be muscle, tendon, nerve, joint, or bone pain? Do I need imaging or blood tests? Is weight-bearing safe? Which changes should make me seek urgent help, and how should I return to activity?