What causes thigh pain?

Pain after sprinting, stretching, or lifting may involve a muscle strain or hamstring strain, especially at the back of the thigh. A direct knock can cause a muscle contusion with tenderness or bruising. Hip osteoarthritis may send aching into the front or side of the thigh, sometimes with stiffness after rest. Burning, tingling, or electric pain can reflect nerve irritation from the back or hip. Deep, focused pain that worsens with impact needs assessment for a bone problem such as a stress fracture. Swelling, skin colour change, weakness, fever, and the exact location add useful clues.

For mild pain after activity, pause the provoking exercise, use comfortable movement, and return gradually as symptoms settle. Avoid deep massage over a fresh bruise or forcing a painful stretch. Arrange assessment if pain persists, keeps recurring, changes your walking, or prevents normal activity. A clinician may examine the hip, back, muscles, nerves, and circulation; treatment could include an individually paced rehabilitation plan. See [Thigh Pain](/symptoms/thigh-pain/) or [Sports Physiotherapy](/treatments/physiotherapy-and-rehabilitation/sports-physiotherapy/) for related guidance.

Seek urgent care for sudden thigh swelling with warmth or colour change, chest pain or breathlessness, a cold or pale foot, inability to bear weight, severe pain after injury, or new leg weakness. Fever with a hot, swollen area also needs prompt medical attention.

Which structure is most likely causing my pain? Do I need imaging or blood tests? What activity is safe while it settles? Which warning signs should make me seek urgent help?