Buerger disease is an inflammatory disease of small and medium blood vessels, most often in the legs and arms. It causes pain in the hands or feet, color changes with cold, and sores that heal slowly, and doctors may see reduced pulses. The condition usually affects adults under 50 who use tobacco, and quitting all nicotine is the key treatment. Buerger disease can progress over years and may lead to tissue damage or amputation, but stopping tobacco use lowers these risks. Talking with your healthcare provider can bring clarity and reassurance, and medicines for blood flow and wound care are often used.
Overview
Buerger diseaseSymptoms
Buerger disease causes reduced blood flow to the hands and feet. Early symptoms of Buerger disease include cold, pale, or bluish fingers or toes, numbness, and pain with walking. Sores on fingertips or toes that don’t heal and rest pain can develop.
Outlook and prognosis
Many living with Buerger disease can stay active when they fully stop smoking or vaping nicotine, which is the key step that slows blood vessel damage. Flares may still happen and sometimes lead to ulcers or amputations. Regular follow-up helps protect circulation.
Causes and risk factors
Buerger disease is strongly linked to tobacco use—cigarettes, cigars, or smokeless tobacco; even small amounts can sustain disease activity. Risks include younger age (often under 45), male sex, certain Asian/Middle Eastern ancestry, genetic susceptibility, and possible contribution from periodontal disease.
Genetic influences
Genetics play a smaller role in Buerger disease than in many vascular conditions. No single gene causes it, but certain genetic variations may raise susceptibility. The strongest driver is tobacco exposure; quitting dramatically lowers risk regardless of genetic background.
Diagnosis
Doctors diagnose Buerger disease by history (tobacco use), limb symptoms, and exam, then ruling out diabetes, clots, and autoimmune causes. Imaging (angiography or ultrasound) shows typical segmental blockages. Blood tests support the diagnosis of Buerger disease by exclusion.
Treatment and drugs
Treatment for Buerger disease focuses on stopping tobacco exposure completely, easing vessel inflammation, and improving blood flow. Doctors may use medicines for pain and circulation, supervised wound care, and procedures to open or bypass blocked arteries. Gentle exercise, foot care, and infection prevention support healing.
Symptoms
Pain in the fingers or toes, especially with walking or using your hands, can be the first hint something’s off. Buerger disease—medically known as thromboangiitis obliterans—affects small blood vessels in the arms and legs, reducing blood flow to the tips of the fingers and toes. You might notice small changes at first, like coldness or color shifts in a few digits. Early symptoms of Buerger disease often include activity-related pain, cold sensitivity, and slow-healing sores.
A cramping or burning ache can start in the feet, calves, or hands when you walk or use your hands. It usually eases with rest, then can return when you get moving again. Clinicians call this claudication, which means muscle pain from too little blood flow.
A deep, hard-to-ignore pain may show up in the toes or fingers when you are resting, especially at night. Dangling the hand or foot off the bed can bring temporary relief because gravity helps blood reach the area.
Cold weather or touching cold objects can trigger numbness, pain, or a prickly feeling in the fingers or toes. In Buerger disease, these episodes can be more intense and last longer than simple cold hands. Warming up and avoiding sudden temperature changes often helps.
Fingers or toes may turn pale or bluish when cold, then redden as blood returns. These color swings tend to affect several digits and can be uncomfortable. Loved ones often notice the changes first.
How people usually first notice Buerger disease?
Many first notice Buerger disease when fingers or toes hurt or tingle during walking or in the cold, then feel better with rest; this is often joined by color changes in the digits that turn pale, then bluish, then red as blood flow stutters back. Small, painful sores can appear on the tips of fingers or toes that heal slowly, and in some people the skin feels unusually cold or a pulse at the wrist or ankle seems faint. Doctors are often alerted by these circulation problems in people who smoke or use other tobacco, making these patterns the first signs of Buerger disease and how it is first noticed.
Types of Buerger disease
Buerger disease affects blood flow to the hands and feet, so the day-to-day impact often shows up when walking, standing, or using your fingers in the cold. Clinicians often describe them in these categories: symptoms tied to blood vessel inflammation and clotting in the limbs, skin and tissue changes from poor circulation, nerve-related discomfort, and issues that flare with cold or tobacco exposure. Early symptoms of Buerger disease may be subtle—cold fingers, foot pain after a short walk—while advanced problems can include nonhealing sores. Not everyone will experience every type.
Circulation pain
Cramping pain in the calves, feet, forearms, or hands often appears with activity and eases with rest. Fingers or toes may feel cold or numb, and walking distance can shrink over time. Pain may start on one side and later involve other limbs.
Skin and ulcers
The skin on toes or fingers may look pale, reddish, or bluish and can feel cool to the touch. Small sores at the tips of toes or fingers may heal slowly or reopen. Infections can develop if blood flow remains poor.
Color changes
Fingers or toes may turn white, then blue, then red with cold or stress, similar to Raynaud’s. These color shifts can come with tingling or burning. Warmth usually helps the color return.
Clot-related episodes
Small, tender lumps or red streaks can form along surface veins, often on the legs or arms. The area may feel warm and sore for days to weeks. These episodes can recur in different spots.
Nerve symptoms
Tingling, pins-and-needles, or burning pain can occur in the feet or hands. Some may notice reduced sensation or a “walking on pebbles” feeling. Symptoms can worsen at night.
Cold sensitivity
Cold weather or handling cold objects can trigger pain and color changes in fingers or toes. Symptoms may improve with gloves, warm socks, and keeping the whole body warm. Daily life often makes the differences between symptom types clearer.
Rest pain
Achy, burning pain in the forefoot or fingers can persist even at rest, especially at night. Hanging the limb off the bed or sitting up may bring brief relief. This pain often signals more advanced blood flow limitation.
Tissue loss
Blackened tips of toes or fingers may appear when blood flow is severely limited. The area can be very painful or, if nerves are damaged, feel oddly numb. Prompt care is needed to prevent infection and further tissue loss.
What genetics can tell you about symptoms
Some people with Buerger disease who smoke have gene variants that heighten inflammation and blood-clotting signals, making vessel blockages and limb pain more likely. Variants affecting how vessels repair themselves can link to worse circulation, leading to numbness, ulcers, or tissue loss.
Causes and risk factors
The exact cause is not fully understood, but tobacco use is the key trigger for Buerger disease. Smoking or chewing tobacco can inflame small blood vessels and raise the risk of clots. Risk factors for Buerger disease include being under 45, being male, and living in regions where heavy tobacco use is common. A family history may increase susceptibility, and other health and environmental factors can shape how severe it becomes. Doctors distinguish between risk factors you can change and those you can’t.
Environmental and biological risk factors
For Buerger disease, certain environmental exposures and body-based factors can raise the chance that the condition develops. This often shows up in young adulthood, sometimes before any early symptoms of Buerger disease are noticed. Two people with the same exposure can react very differently—biology shapes the response. Below are the environmental and biological risks most often discussed in clinic visits.
Breathing in smoke from cigarettes or cigars is the strongest environmental risk tied to Buerger disease. Toxins and nicotine in smoke can inflame and tighten small blood vessels in the hands and feet. Continued exposure can raise the chance of vessel blockage.
Regular exposure to others’ smoke at home, in cars, or indoors can also increase risk. Even brief, repeated exposure may irritate blood vessels and set off spasms.
Nicotine absorbed from products kept in the mouth, such as chewing tobacco, has been linked with this condition. Absorption through mouth tissues can provoke vessel spasm and inflammation. Repeated exposure can sustain vessel injury over time.
Buerger disease is diagnosed most often in younger to middle-aged adults, typically between 20 and 45 years. Risk appears lower after about age 50.
Genetic risk factors
Research points to an inherited component in who develops Buerger disease, but no single gene explains most cases. Some risk factors are inherited through our genes. Current evidence suggests multiple genetic risk factors for Buerger disease, and findings can vary by ancestry. Because results are mixed, genetics is viewed as one piece of the overall picture.
HLA gene variants: Variants in HLA immune genes, such as HLA-B51 and related types, have been linked to Buerger disease in several studies. These associations differ by population, and not everyone with these variants develops the condition. They may shape how the immune system interacts with blood vessel walls.
Family history: Rare family clusters have been reported for Buerger disease, suggesting inherited susceptibility. The overall risk to close relatives appears low, and no single causative gene has been identified.
Immune-response genes: Changes in genes that tune inflammation and immune signaling have been seen more often in small studies. Results are not consistent across regions, so these markers are considered suggestive rather than proven.
Vessel-lining genes: Variants affecting the nitric oxide pathway, which helps the inner lining of vessels relax and protect against injury, have been associated in some groups. Evidence is limited, and these changes are not specific to this condition.
Clotting variants: Changes such as Factor V Leiden or the MTHFR C677T variant have been reported more often in some people with Buerger disease. Links are inconsistent, and these variants alone do not cause the disease.
Ancestry-linked patterns: Differences in rates across regions suggest population-specific genetic backgrounds may contribute to risk. This helps explain why study findings vary, even when methods are similar.
Lifestyle risk factors
Buerger disease is strongly shaped by behavior, especially exposure to tobacco and nicotine, and by daily habits that affect circulation and wound healing. Below are the key lifestyle risk factors for Buerger disease and habits that influence symptom flare-ups and complications. Diet and exercise do not cause Buerger disease, but they can affect walking tolerance, ulcer healing, and overall vascular health.
Any cigarette use is the dominant trigger for disease activity and progression. Complete cessation is the most effective step to prevent flare-ups and limb-threatening complications.
Chewing tobacco and snuff still deliver nicotine that can sustain vessel inflammation. Stopping all tobacco forms is necessary to reduce ischemia and ulcers.
E-cigarettes and nicotine replacement can maintain nicotine exposure and may perpetuate disease activity. Prefer non-nicotine cessation strategies guided by a clinician.
Inhaled cannabis has been linked to cannabis arteritis and may worsen limb ischemia in Buerger disease. Avoid smoked or combusted products to lower vascular risk.
Risk prevention
For Buerger disease, the most effective prevention is avoiding all tobacco and nicotine exposure and protecting blood flow to the hands and feet. Prevention works best when combined with regular check-ups. Taking care of skin, treating small injuries quickly, and steering clear of things that narrow blood vessels can lower the chance of flare-ups. Recognizing changes early and acting fast can help prevent lasting damage.
Completely avoiding cigarettes, cigars, hookah, vaping, smokeless tobacco, and even nicotine patches or gum is the single most important step for Buerger disease. Any nicotine can keep blood vessels narrowed and the disease active. Support with counseling and non‑nicotine medications may help you quit.
Smoking cannabis may also irritate blood vessels and worsen Buerger disease. If you use cannabis, avoid smoking or vaping and discuss safer options with your clinician.
Keep your home and car smoke‑free to limit exposure that can trigger vessel spasm. Ask friends and family to avoid smoking around you.
Cold causes vessels to tighten and can reduce blood flow in Buerger disease. Wear warm socks, gloves, and layers, and avoid prolonged cold‑water exposure.
Transmission
If you’re wondering how Buerger disease is transmitted, it isn’t—you can’t catch it or pass it on through everyday contact, sex, blood exposure, or during pregnancy. It’s also not considered an inherited condition, and it doesn’t follow a clear pattern in families. Instead, Buerger disease develops mainly in people who use tobacco; smoking or chewing tobacco can trigger blood vessel inflammation in those who are susceptible. Because it isn’t an infection, prevention focuses on complete tobacco cessation rather than avoiding contact with others.
When to test your genes
Buerger disease is not inherited, so routine genetic testing isn’t recommended. Consider testing only if your clinician suspects a rare look‑alike hereditary vasculitis or clotting disorder based on your family history, age at onset, or atypical features. Early evaluation should focus on quitting tobacco completely and vascular imaging, which directly guide care.
Diagnosis
For many, the first step comes when everyday activities start feeling harder—like toe pain when walking, fingers that turn pale in the cold, or a sore on a toe that won’t heal. It’s natural to worry when symptoms don’t have a clear explanation. Doctors focus on the diagnosis of Buerger disease after more common causes of poor circulation are ruled out, especially in people who use tobacco. The goal is to confirm the pattern of small- and medium-artery blockage and exclude other conditions that can look similar.
Your provider asks about limb pain, color changes, numbness, and nonhealing sores in the fingers or toes. They also review age, other health conditions, and medications to spot patterns that fit Buerger disease.
Clinicians ask in detail about cigarettes and other tobacco use now or in the past. Even small amounts can matter for Buerger disease and help explain symptoms.
Doctors check pulses in the wrists and feet, skin temperature, and the look of the nails and sores. Findings like weak pulses at the ankles or wrist and tender, shallow ulcers support the diagnosis.
Basic labs help rule out diabetes, high cholesterol, and infections that can reduce blood flow. Additional tests can look for autoimmune or clotting disorders that mimic Buerger disease.
Stages of Buerger disease
Buerger disease does not have defined progression stages. This is because it tends to flare in episodes and may worsen quickly with ongoing tobacco exposure, rather than moving through a fixed sequence. Doctors assess early symptoms of Buerger disease such as cold, pale or bluish fingers or toes, pain with walking that eases with rest, or slow-healing sores, together with a hands-on circulation exam. Different tests may be suggested to help confirm the diagnosis and rule out other causes, including blood tests to exclude inflammation or autoimmune conditions and imaging such as ultrasound or angiography to map blood flow.
Outlook and prognosis
Many people ask, “What does this mean for my future?”, especially after first hearing about Buerger disease. Day to day, the outlook depends on blood flow to the hands and feet and how quickly inflammation in the blood vessels is brought under control. In medical terms, the long-term outlook is often shaped by both genetics and lifestyle. The single biggest driver is tobacco exposure of any kind—cigarettes, roll‑your‑own, cigars, vaping, and even nicotine replacement can keep the disease active for some. Early symptoms of Buerger disease, like finger pain when walking in the cold or small sores at the tips of toes that won’t heal, are warning flags that deserve prompt care.
Prognosis refers to how a condition tends to change or stabilize over time. With complete and permanent tobacco cessation, many people with Buerger disease see symptoms stabilize, ulcers heal, and the risk of amputation drop significantly over months to years. Continued smoking or vaping, however, is linked to ongoing flares, tissue loss, infections, and a substantially higher chance of finger or toe amputation; in severe, untreated cases, limb loss can extend to the foot or hand. Death directly from Buerger disease is uncommon, but serious infections and complications from repeated surgeries can raise health risks, especially if blood flow cannot be restored.
Looking at the long-term picture can be helpful. Most people who quit nicotine entirely, protect their extremities from cold and injury, manage infections early, and keep blood pressure, cholesterol, and diabetes in check can maintain mobility and independence. Treatments that improve circulation may ease pain and help ulcers heal, but they work best alongside total nicotine avoidance. Talk with your doctor about what your personal outlook might look like, including your risks for flare-ups and amputation, and what steps—like smoking cessation support and foot and hand care—can improve your odds.
Long-term effects
Buerger disease can shape day-to-day life mainly through ongoing problems in the hands and feet, where blood flow stays limited. Long-term effects vary widely, and they tend to progress if tobacco exposure continues but often stabilize if it stops. Many living with Buerger disease describe cycles of pain flares, slow-healing sores, and colder, more sensitive fingers and toes. Looking back, some describe their journey as starting with early symptoms of Buerger disease—like fingertip pain in the cold—then moving toward more persistent issues over time.
Reduced blood supply leaves fingers and toes colder, paler, and more easily fatigued. Over time this can limit grip strength or standing tolerance. Everyday tasks may take longer.
Cramping pain in the calves or feet may appear after short walks and ease with rest. Distance often shrinks during flare-ups. Many pace activities to avoid triggering pain.
Aching or burning pain can persist even when not moving, especially at night. Sleep may be disrupted and positioning the limb down may briefly ease discomfort. This ongoing pain can drain energy.
Small injuries on fingers or toes may turn into slow-to-heal sores. These can linger for weeks to months and can return. Scarring and skin changes are common.
How is it to live with Buerger disease?
Living with Buerger disease often means pacing your day around your circulation—keeping warm, avoiding tobacco completely, and watching your hands and feet for early signs of pain, color change, or sores. Flare-ups can make walking or using your fingers hard, especially in cold weather, and some may feel burning pain at rest that interrupts sleep. Daily routines tend to include foot and hand care, wound checks, and frequent follow-ups, while friends and family often become partners in a strictly smoke‑free home and in planning activities that minimize cold exposure and long periods of standing. When the condition is managed well—most importantly by quitting all nicotine products—many find a steadier rhythm, less pain, and fewer complications.
Treatment and drugs
Buerger disease is treated by stopping tobacco completely, because any nicotine exposure—cigarettes, vaping, chewing tobacco, even nicotine replacement—can keep blood vessels inflamed and worsen blockages. Doctors focus on easing pain, improving blood flow, and preventing ulcers or amputation; this may include medicines that widen blood vessels, low‑dose aspirin or similar blood thinners to reduce clotting, and careful wound care for the feet and hands. Some people benefit from supervised exercise therapy, structured walking, and keeping the limbs warm, while severe cases may need procedures to restore circulation or, when that’s not possible, surgical removal of dead tissue. Supportive care can make a real difference in how you feel day to day. If pain is difficult to control or sores are not healing, your doctor may refer you to a vascular specialist to discuss options such as nerve blocks, prostaglandin infusions, or, rarely, spinal cord stimulation.
Non-drug treatment
Lifestyle and supportive therapies are central to easing day-to-day symptoms and protecting your hands and feet. Non-drug treatments often lay the foundation for care in Buerger disease, and they work best when started early. Knowing the early symptoms of Buerger disease can help you seek care sooner and put these steps in place.
Stopping all tobacco and nicotine—including cigarettes, vaping, and smokeless products—is the single most important step. Behavioral quit programs, coaching, and text or phone supports can double your chances of success. Plan for triggers and set a clear quit date.
A gradual walking program can improve circulation and reduce leg pain with activity. Structured sessions help you build up safely and track progress.
Keeping hands and feet warm helps blood flow and may limit painful spasms. Use layered clothing, insulated gloves, and thermal socks, and avoid sudden cold exposure.
Daily checks for blisters, cracks, or color changes can catch problems early. Gentle cleansing and protective dressings lower infection risk and support healing.
Your genes may have an impact on how drugs work for you
Think of treatment like tuning an engine: the same fuel can run differently depending on the parts under the hood. In Buerger disease, gene differences may alter how antiplatelet drugs, pain medicines, or clot‑preventers are processed, guiding dose choices and alternatives.
Pharmacological treatments
Medicines for Buerger disease focus on improving blood flow, easing pain, preventing infection, and supporting tobacco cessation. Options range from pills you take at home to short hospital infusions for severe flare-ups or nonhealing ulcers. Not everyone responds to the same medication in the same way. Doctors often combine treatments and adjust over time based on symptoms and circulation tests.
Varenicline or bupropion can help people stop all tobacco, which is the most important step for protecting blood flow. Nicotine products (patches, gum, vapes) can worsen the disease and are usually avoided.
Iloprost given by IV (and sometimes alprostadil) can improve rest pain and help ulcers heal when circulation is very limited. These IV treatments are used for rest pain and ulcers that don’t heal, which are often more stubborn than early symptoms of Buerger disease. Side effects can include headache, flushing, and low blood pressure.
Nifedipine or amlodipine can relax small arteries and reduce cold-triggered finger or toe attacks. This may lessen color changes, pain, and numbness in the hands and feet. Dizziness and ankle swelling can occur.
Sildenafil or tadalafil may improve blood flow to the digits and support healing of small ulcers in some people. These are often used off-label when vasospasm is prominent. Headache, flushing, and indigestion are possible side effects.
Genetic influences
Many wonder whether Buerger disease is hereditary. Current research suggests there isn’t a single gene that causes it, and it doesn’t follow a simple inheritance pattern in families. Beyond lifestyle factors, genetics may also contribute. Subtle differences in genes may make some people more sensitive to tobacco exposure, shaping how the immune system and blood vessels react and increasing the chance of developing the disease. Family clusters are reported, but a strong family history is uncommon, and genetic testing isn’t part of routine care for Buerger disease right now. In practice, the biggest lever is avoiding all tobacco, while your family history can be one clue that helps your doctor consider risk.
Is Buerger disease genetic?
Genetics play a smaller role in Buerger disease than in many vascular conditions. No single gene causes it, but certain genetic variations may raise susceptibility. The strongest driver is tobacco exposure; quitting dramatically lowers risk regardless of genetic background.
Pharmacogenetics—how genetics influence drug effects
For people with Buerger disease, quitting all tobacco is the most important step, and medicines are often added to improve blood flow, ease pain, and protect limbs; genetics can sometimes influence how these drugs work for you. There isn’t a gene test made specifically to guide Buerger disease therapy, but genetic testing can sometimes identify how your body handles certain medicines used in care. Differences in how quickly your liver processes drugs may affect antiplatelet medicines like clopidogrel, vasodilators such as cilostazol or some calcium channel blockers, common pain medicines, and blood thinners—potentially changing the best dose or the chance of side effects. Genes that influence nicotine breakdown or how you process bupropion can also affect which stop‑smoking aid and dose work best, which matters because stopping tobacco is the key treatment. If results suggest you’re a “slow” or “fast” metabolizer, your clinician may adjust the drug or dose, or choose a medicine that isn’t heavily processed by the liver. Genetic results are one part of the picture; your other health conditions, the medicines you already take, and how active Buerger disease is will also guide decisions.
Interactions with other conditions
When diabetes or cholesterol-related artery disease are also present, reduced blood flow and slow wound healing can stack up, raising the risk of ulcers and infections in the hands and feet. In people with Buerger disease, early symptoms of Buerger disease like finger or toe pain at rest may be harder to notice if diabetic neuropathy blunts sensation. Raynaud’s (extreme sensitivity to cold with color changes in fingers or toes) or cold-related injury can trigger spasms in already narrowed vessels, worsening color changes and pain. Having more than one diagnosis can make symptoms feel harder to untangle. Gum disease has been linked to Buerger disease in some studies, and active oral infection may coincide with flares in limb symptoms, so dental care matters. If atherosclerotic peripheral artery disease or clotting disorders are suspected alongside Buerger disease, clinicians usually coordinate care to avoid medication conflicts and to tailor blood-thinning, wound, and infection management.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
History
Throughout history, people have described legs or fingers that became painful and cold, then developed sores that would not heal after long walks or winter exposure. In some families, stories told of a young adult who smoked, then suddenly faced severe foot pain and blackened toes. Looking back helps explain why doctors later connected these patterns to Buerger disease.
First described in the medical literature as a cluster of limb pain, color changes, and inflamed vessels in young men who smoked, early reports came from late 19th–early 20th century Europe and North America. Physicians noticed that arteries and veins in the arms and legs looked inflamed and narrowed, but without the fatty build‑up seen in classic hardening of the arteries. Over time, descriptions became more precise as surgeons and pathologists compared tissue samples from different countries and found the same hallmarks.
In recent decades, awareness has grown that Buerger disease affects people across many regions, not just one group or gender. Doctors in the Middle East, South and East Asia, and Eastern Europe reported similar patterns: severe limb pain at rest, toe or finger ulcers, and strong links to tobacco use, including cigarettes and other forms. As medical science evolved, imaging tests allowed clinicians to see the “corkscrew‑like” small vessels in affected limbs, which supported earlier observations from surgery and autopsy.
Not every early description was complete, yet together they built the foundation of today’s knowledge. Reports first focused on young men, likely reflecting who smoked most at the time and who reached hospitals. Later, as tobacco use patterns changed and access to care broadened, clinicians recognized Buerger disease in women and in a wider age range, though it still tends to appear in younger adults compared with other circulation problems.
With each decade, the role of tobacco became clearer. Historical case series showed that flare‑ups often followed continued smoking, while quitting reduced new vessel inflammation and amputations. This pattern held across cultures and healthcare systems, shaping today’s central message: strict avoidance of all tobacco and nicotine products is the key step to slow or stop the disease.
From early theories to modern research, the story of Buerger disease has moved from bedside observations of cold, painful limbs to consistent diagnostic features seen on imaging and biopsy. What has remained steady is the lived experience described over generations: cramping when walking, burning pain in the toes at night, fingertips that turn pale or bluish in the cold, and sores that stubbornly linger. These historical steps inform current care, guiding clinicians to ask about tobacco in all forms and to act early to protect hands and feet.