Peripheral Arterial Disease (PAD) and Your Feet – Circulation Matters

Peripheral Arterial Disease (PAD) and Your Feet – Circulation Matters Peripheral arterial disease (PAD) is a silent but serious condition that often develops in people with diabetes. Poor circulation dramatically impacts your feet' ability to heal, making even minor injuries dangerous. At Central Florida Foot & Ankle Institute, Dr. Sean Griffin emphasizes that understanding PAD is critical for protecting your foot health and preventing amputation. What is Peripheral Arterial Disease? Peripheral arterial disease occurs when plaque accumulates inside arteries that supply blood to your legs and feet. This buildup (atherosclerosis) narrows the arteries, reducing blood flow. In severe cases, arteries become blocked completely. Without adequate blood flow, your feet don't receive enough oxygen and nutrients. Wounds heal slowly or not at all. Infections become life threatening. This is why PAD is such a serious concern for diabetic foot health. PAD and Diabetes: A Dangerous Combination People with diabetes have a dramatically higher risk of developing PAD: PAD is 4 times more common in diabetics than non diabetics Diabetics with PAD tend to develop it earlier The disease progresses more rapidly Complications are more severe This combination is particularly dangerous because: Neuropathy + poor circulation : A foot wound that you don't feel (due to neuropathy) can't heal (due to poor circulation) Impaired immunity : Diabetes reduces infection fighting ability, and poor circulation makes this worse Delayed detection : Many people don't realize they have PAD until significant damage has occurred Causes and Risk Factors for PAD Primary causes of PAD : Atherosclerosis : Plaque buildup in arteries (most common) Arterial inflammation : Some conditions cause inflammation of arterial walls Arterial injury : Trauma or procedure related damage Risk factors are similar to heart disease : Diabetes : Highest risk factor for foot problems from PAD Smoking : The most modifiable risk factor; smoking dramatically accelerates PAD High blood pressure : Hypertension damages arterial walls High cholesterol : LDL cholesterol contributes to plaque formation Older age : PAD increases with age Family history : Genetic predisposition plays a role Obesity : Extra weight increases cardiovascular strain Sedentary lifestyle : Lack of activity increases risk Kidney disease : Particularly common in diabetics with PAD Recognizing PAD: Symptoms to Watch For Classic Claudication Pain The hallmark symptom of PAD is claudication—pain or cramping in your legs or feet during activity: Calf cramping during walking that improves with rest Thigh or buttock pain during activity Foot pain or fatigue during exercise Consistent distance : You might notice you can walk 2 blocks before pain starts, then pain resolves after resting Improvement with rest : The pain reliably goes away when you stop walking This pattern is very characteristic of PAD. Many people assume it's just "getting old" and don't seek care. Critical Limb Ischemia Symptoms When PAD becomes severe, symptoms occur even at rest: Rest pain : Pain in your foot or leg when you're not walking, especially at night Nocturnal pain : Many people with severe PAD experience foot pain that wakes them at night Pain relief with dependency : Hanging your leg off the bed might ease the pain (because gravity helps blood flow) Wounds that won't heal : Ulcers or sores that persist despite care Tissue loss : Black or purple areas on your toes (gangrene) Infection : Spreading redness, warmth, or drainage Other PAD Symptoms Coolness in legs or feet : One leg noticeably cooler than the other Color changes : Pale when legs are elevated; red when legs are lowered Hair loss : Unusual loss of hair on legs and feet Weak pulses : Your podiatrist or doctor can't feel pulses in your feet Shiny appearance : Skin appears unusually shiny or smooth Muscle atrophy : Leg muscles appear smaller or wasted Slow wound healing : Cuts or injuries heal much slower than expected Toenail changes : Brittle, thick toenails that are hard to trim Erectile dysfunction : In men, this can be an early sign of PAD Silent PAD Many people have PAD without symptoms. They might not know until: A wound develops that won't heal They undergo screening blood pressure tests They have a vascular ultrasound for another reason Amputation becomes necessary This is why screening is important, especially for people with diabetes. Diagnosis: How We Detect PAD Physical Examination Dr. Sean Griffin begins with a careful foot exam: Checking pulses : Feeling for pulses in your feet and legs Dorsalis pedis pulse (top of foot) Posterior tibial pulse (inside ankle) Absent or weak pulses suggest PAD Capillary refill : Pressing on toenails and timing color return Delayed return ( 3 seconds) suggests poor circulation Temperature assessment : Feeling your feet One foot notably cooler suggests circulation problems Color examination : Looking for pallor, redness, or dark discolor