What you may notice
An ache, cramp or tired feeling in the calf, thigh or buttock that starts with walking and settles after stopping can reflect a mismatch between a muscle's need for blood and its supply. Note where it occurs, how far you walk before it starts, and what makes it settle.
Arteries supply the leg
Nerves carry signals
What could cause it?
Narrowed leg arteries are one possibility. Arthritis, a muscle or tendon problem, and pressure on nerves in the back can also limit walking. Relief after simply stopping versus sitting or bending forwards is useful information, but does not diagnose the cause. Examination, foot pulses and an ankle-pressure test may help; ultrasound or other scans are chosen when needed.
When to contact a doctor
Arrange a medical assessment if the pattern recurs or restricts activity. Pain at rest, a non-healing wound or a darkening toe needs prompt review. A suddenly painful, cold, pale, numb or weak foot is an emergency: call 108. Do not wait for a routine appointment.
How interventional radiology may help
If reduced arterial flow is confirmed, treatment includes cardiovascular risk reduction, appropriate medicines and an individually planned exercise programme. An interventional radiologist may open a suitable narrowing with a balloon, sometimes with a stent. Bypass surgery is another option. IR does not treat every cause of walking pain; the choice depends on symptoms, anatomy and the condition of the limb.
Further reading: detailed assessment and treatment options
Patient information sources
References are in English.
Educational information, not a diagnosis. The causes listed are examples, not a complete list. Tests and treatment depend on your individual assessment.