Definition
Buerger's disease (thromboangiitis obliterans) is a recurring inflammation of the intermediate and small arteries and veins of the lower and upper extremities.
Description
It produces thrombus formation and segmental occlusion of the vessels, and its microscopic appearance separates it from other vessel diseases. Buerger's disease occurs most often in men between 20 and 35 years of age and has been reported across all races worldwide. Heavy smoking or tobacco chewing is a clear causative or aggravating factor.
Clinical Manifestations
Pain is the standout symptom, generally bilateral and symmetric with focal lesions. Patients report cramps in the feet, particularly the arches, after exercise (instep claudication) that ease with rest. Early on, burning pain is aggravated by emotional disturbances, nicotine, or chilling, along with digital rest pain (fingers or toes) and coldness or cold sensitivity. Color changes (rubor) of the feet progress to cyanosis (in one extremity or certain digits) when the extremity is dependent. Various paresthesias develop, and radial and ulnar pulses are absent or diminished when the upper extremities are involved. Eventually ulceration and gangrene set in.
Assessment and Diagnostic Methods
Segmental limb blood pressures, duplex ultrasonography, and contrast angiography identify the occlusions.
Medical Management
The objectives are to improve circulation to the extremities, halt progression, and protect the extremities from trauma and infection.
Treatment includes:
- Completely stopping all tobacco use.
- Regional sympathetic block or ganglionectomy to produce vasodilation and increase blood flow.
- Conservative debridement of necrotic tissue for ulceration and gangrene.
- Amputation when gangrene of a toe develops, usually below-knee and occasionally above-knee. Indications are worsening gangrene (especially if moist), severe rest pain, or severe sepsis.
- Vasodilators are rarely prescribed, since they dilate only healthy vessels.
Frequently Asked Questions
What causes Buerger's disease? Tobacco use is central to both the start and the progression of the disease. It is an inflammatory, segmental occlusion of small and medium arteries and veins, and complete tobacco cessation is the only thing that reliably halts it (NORD).
Who typically gets it? It most often affects young to middle-aged people who use tobacco. A common clinical criterion is onset before age 45 with current or recent tobacco use and distal-extremity ischemia, after ruling out diabetes, autoimmune disease, and an embolic source (StatPearls).
What is the single most important thing to teach the patient? Complete tobacco cessation, including chewing tobacco and secondhand exposure. No medical or surgical treatment works while the patient keeps using tobacco; abstinence almost always prevents further tissue damage.
What is the classic symptom? Pain, usually bilateral and symmetric. Patients report cramping in the arches of the feet after walking (instep claudication) that eases with rest, along with digital rest pain, cold sensitivity, and color changes that can progress to ulceration and gangrene.
Why are vasodilators rarely used? They dilate healthy vessels rather than the diseased, occluded ones, so they do little to improve perfusion in affected limbs. Care focuses on stopping tobacco, protecting the extremities from trauma and infection, and debriding or amputating necrotic tissue when needed.