Yes, this symptom pattern is serious, and I want to be direct about that because it is one of the most commonly dismissed vascular symptoms I see at Sparsh Hospital, Hennur. The pattern you are describing, pain or cramping in the calf, thigh, or buttock that comes on reliably during walking and resolves within a few minutes of rest, is called intermittent claudication, and it is the cardinal symptom of peripheral arterial disease (PAD). It occurs because the arteries supplying your leg have been narrowed by atherosclerosis, the same plaque buildup that affects coronary arteries and causes heart attacks and strokes. At rest, the narrowed artery supplies enough blood to meet the muscle's resting metabolic demand, so there are no symptoms. During walking, the muscle's demand for blood increases, the narrowed artery cannot keep pace, the muscle is starved of oxygen, and it cramps. Resting reduces demand back to the level the narrowed artery can supply, and the pain resolves. The reason I call this serious despite the fact that the pain resolves with rest is twofold. First, PAD is not limited to your leg: a patient who has significant arterial narrowing in the leg arteries very commonly also has atherosclerosis in the coronary arteries that supply the heart and the carotid arteries that supply the brain. Their cardiovascular risk is substantially elevated and needs aggressive medical management alongside the peripheral circulation. Second, untreated PAD can progress. The pain on walking that covers 500 metres today may cover 200 metres next year. More concerning, a small proportion of patients with claudication will progress to critical limb ischaemia, where the blood supply becomes inadequate even at rest, producing pain in the foot at night or tissue loss. "Any patient in Bengaluru experiencing the claudication pattern should have a vascular assessment including an Ankle Brachial Pressure Index (ABPI) measurement, which is a simple non-invasive test that objectively confirms peripheral arterial disease and quantifies its severity".
Related reading:
Peripheral Arterial Disease: Why Leg Pain on Walking Is Never Just About Age
Varicose Veins: When Cosmetic Concern Becomes a Vascular Problem
Deep Vein Thrombosis (DVT)
Written by Dr. Abhilash V, MBBS, MS General Surgery, DrNB Vascular and Endovascular Surgery (National Board of Examinations, New Delhi), Consultant Vascular and Endovascular Surgeon, Sparsh Hospital Hennur, Chinmaya Mission Hospital Indiranagar, and Sparsh Hospital Yelahanka, Bengaluru. Phone: +91 76766 84611.
