Peripheral artery disease

Audience: Patients and providers
Status: Clinical guide · patient + provider
Last updated: 2026-03-27

1. Clinical overview

Peripheral artery disease is systemic atherosclerotic disease affecting limb perfusion, with implications far beyond claudication because it also signals elevated MI, stroke, and limb-loss risk.

2. Common causes and risk factors

• Smoking, diabetes, CKD, hypertension, and hyperlipidemia are major drivers.
• Existing CAD or cerebrovascular disease often coexists.

3. Typical symptoms

• Exertional calf or thigh pain, reduced walking distance, slow-healing wounds, rest pain, or in some cases no classic symptoms at all.

4. Diagnosis and evaluation

• Resting ABI is central to workup when PAD is suspected.
• Examine pulses, skin, ulceration, temperature, and functional limitation.
• Distinguish vascular claudication from neuropathy, spinal stenosis, and musculoskeletal pain.

5. Treatment (non-pharmacologic)

• Smoking cessation and structured walking therapy are core interventions.
• Foot-care education is essential, especially in diabetes or neuropathy.

6. Treatment (pharmacologic)

• Antiplatelet therapy commonly uses aspirin or clopidogrel, and high-intensity statin therapy commonly uses atorvastatin or rosuvastatin.
• Blood pressure and diabetes optimization often involve ACE inhibitors or ARBs such as lisinopril or losartan and evidence-based diabetes therapy when indicated.
• Cilostazol may improve claudication walking distance in selected patients who do not have heart failure.

7. Monitoring and follow-up

• Track walking tolerance, wound healing, smoking status, medication adherence, and limb symptoms.
• Repeat vascular assessment when function declines or tissue loss develops.

8. Practical counseling points

• Explain that PAD treatment is both limb protection and cardiovascular prevention.
• Encourage daily walking progression within symptom tolerance.
• Review footwear, skin checks, and ulcer reporting early.

9. Red flags and escalation

• Rest pain, non-healing ulcer, gangrene, sudden cool/pale limb, or rapidly declining function require urgent vascular evaluation.
• Escalate immediately for acute limb ischemia concern.

10. Guideline references

• ACC/AHA PAD guideline.
• Society for Vascular Surgery limb-threat guidance.
• Diabetes foot-care standards where relevant.

Note: Educational guide only; not a substitute for individualized medical care.