Poor circulation in the legs: what older adults and families should know

The legs are the far end of the line. Every heartbeat pushes blood down to the feet, and then the body has to coax it all the way back up against gravity. With age, arteries stiffen and collect plaque, the small valves inside the veins wear out, and the lower legs are often the first place poor circulation shows.

The early signs are easy to write off. Cold feet, a cramp that stops your father halfway to the mailbox, a scrape on the shin that lingers for weeks: all of it gets filed under getting older. Poor circulation in the legs is common in older adults, many people who have it don't know, and much of what helps costs nothing. This guide explains the two main kinds, the warning signs and the habits that keep blood moving.

The signs that something is slowing down

Poor circulation builds slowly, and the body adapts around it, which is why families miss it. The classic sign is leg or calf cramping that comes on with walking and fades within a few minutes of rest, which doctors call claudication. Also watch for:

• Feet that are always cold, or one foot colder than the other.
• Skin on the lower legs that looks shiny, pale, or unusually red or brown.
• Toenails that grow slowly or thicken, and hair loss on the shins.
• Legs that feel heavy, tired or achy by evening.
• A sore, blister or scrape on the foot or lower leg that is slow to heal.

That last sign matters most, because blood carries what a wound needs to heal. Many people take these changes for normal aging and wait too long to mention them.

Two opposite problems with one name

"Poor circulation" in the legs usually means one of two conditions that are mechanical opposites. The difference matters because the advice for one can be wrong for the other.

Peripheral artery disease: blood struggling to get down

Peripheral artery disease, or PAD, is a supply problem. Fatty plaque builds up inside the arteries that carry oxygen-rich blood to the legs, narrowing them the way plaque narrows the arteries of the heart. Less blood gets through, so muscles ache when they work, feet run cold and wounds heal slowly. Because it is the same process behind heart attacks and strokes, the Mayo Clinic describes PAD as a warning sign of artery trouble elsewhere in the body.

Chronic venous insufficiency: blood struggling to get back up

Chronic venous insufficiency, or CVI, is a return problem. The one-way valves in the leg veins weaken and let blood slide back down and pool. That causes ankle swelling that is worse by evening, heavy or itchy legs, reddish-brown staining near the ankles, varicose veins and, over time, stubborn ulcers. Our guide to swollen ankles in older adults covers the everyday swelling it causes. Leg elevation and compression help this kind and can be exactly the wrong move for severe artery disease.

Why it happens more with age

Arteries lose elasticity and gather plaque over decades, and vein valves that have fought gravity for seventy or eighty years wear out. Several familiar factors push things further. Smoking does the most damage to arteries. Diabetes harms both blood vessels and the nerves that would otherwise warn of an injury. High blood pressure, high cholesterol and extra weight add to it. And long hours of sitting let blood settle in the legs and leave the calf muscles idle.

Numbness in the feet can also come from the nerves rather than circulation, and many older adults have both. Our guide to neuropathy in the feet explains the difference.

Walking is the medicine

The calf muscles act as a pump, squeezing the veins with every step and pushing blood back toward the heart. For artery disease, regular walking helps the body grow small detour vessels around the narrowed sections. The National Heart, Lung, and Blood Institute lists supervised exercise as a treatment that increases how far people with PAD can walk before pain sets in. Medicare Part B covers supervised exercise therapy for people with PAD leg pain: up to 36 sessions over 12 weeks, after a face-to-face visit and referral from the doctor treating the PAD.

At home, the routine that works for PAD sounds backward: walk until the cramp starts, rest until it passes, then walk again, several times in a session, most days of the week. Over weeks, the distance before pain grows. For someone who can't get out on foot, the same pump works from a chair with ankle pumps, heel raises and marching in place. A caregiver who turns the daily walk into a shared routine, around the block after lunch, makes the habit far more likely to stick than good intentions do.

Everyday habits that keep blood moving

• Break up sitting. Get up, or at least flex the ankles, every hour.
• Drink enough water, unless a doctor has set a fluid limit for heart or kidney disease.
• Keep feet warm, but keep heating pads and hot water bottles off feet that may be numb, because a burn can go unnoticed.
• Stop smoking. Quitting does more for the arteries than any supplement on the shelf, and the pills sold for circulation rarely earn their price.
• Look at the feet daily for sores, blisters and color changes.

For the venous kind, two more measures help. Raising the legs above heart level for a while each day lets gravity assist the trip home and eases swelling. Graduated compression stockings, snug at the ankle and looser higher up, push pooled blood upward. But as Cleveland Clinic notes, people with significant artery disease may be told to use compression carefully or not at all, because squeezing a leg that is already short of blood can cause harm. Get the diagnosis before buying stockings.

Compression stockings are hard to pull on, especially with arthritic hands, and that is one of the practical ways in-home help earns its keep. A caregiver who helps with dressing and daily routines gets the stockings on correctly each morning, keeps the walks on the calendar and looks at the feet every day, which is what catches a new sore while it's still small. In Florida, our Ponte Vedra office can set up that morning routine.

Warning signs that can't wait

• Call 911 if a leg or foot suddenly becomes cold, pale or bluish, numb and painful. An artery may be blocked.
• Same-day care for a calf that turns swollen, red, warm and tender, especially on one side, which can be a blood clot.
• A prompt doctor's visit for leg or foot pain at rest, particularly burning pain at night that eases when the legs hang over the side of the bed, and for any sore on the foot or leg that isn't healing.

Getting it checked

Leg circulation is easy to check. A doctor can learn a lot by feeling the pulses in the feet and looking at the skin. For suspected artery disease, the usual next step is a quick, painless test called the ankle-brachial index, which compares blood pressure at the ankle with blood pressure in the arm. For vein problems, an ultrasound shows how blood is flowing. Treatment usually centers on walking and the habits above, often with medicine for cholesterol, blood pressure or clotting.

If you're noticing these changes in a parent, bring specifics to the appointment: when the cramping starts, how far they can walk before it does, whether one foot is colder, and how long any sore has been there. Write it down beforehand, because details get lost in the exam room. Poor circulation is common with age, but it is worth acting on, and it is usually treatable.

This article is general information, not medical advice. Talk with a doctor about leg pain, color changes or slow-healing sores, and call 911 for a leg that suddenly turns cold, pale and painful.