Medically reviewed by
USA Clinics Medical Review Team
Vascular Health Education Experts
Reviewed: November 2026
Coronary heart disease is one type of arterial disease, not a separate condition. Both terms point to arteries that have narrowed from plaque. The real difference is which arteries are affected and what symptoms show up because of it. Knowing where peripheral artery disease, or PAD, fits into this picture can help you catch warning signs in your legs before they become a bigger problem.
What Is Coronary Heart Disease?
Coronary heart disease happens when plaque builds up inside the arteries that supply blood to your heart.[1] Many doctors also call this coronary artery disease, or CAD, since the two terms describe the same basic process. As plaque grows, it narrows the artery, so less oxygen-rich blood reaches your heart muscle. This can cause chest pain, known as angina. In more advanced cases, it can lead to a heart attack.
What Is Arterial Disease?
Arterial disease is a broader term. It covers any artery in the body that narrows because of plaque. Coronary heart disease is one form of arterial disease. Peripheral artery disease is another.[2] PAD affects the arteries that carry blood to your legs and feet instead of your heart. The underlying process is the same, atherosclerosis, but the location and the symptoms are different.
How Are Heart Disease and PAD Connected?
Heart disease and PAD often show up together. Both come from the same slow buildup of plaque inside your arteries.[2] If you already have PAD, your risk of developing coronary heart disease is higher. The reverse is also true. Shared risk factors include smoking, high cholesterol, high blood pressure, and diabetes, so addressing one condition often helps protect against the other.
Vascular health check
Your Legs Can Signal What Your Heart Is Doing
Leg pain while walking is not always “just getting older.” It can be an early sign of PAD, the same disease process that drives coronary heart disease. A short risk assessment can help you understand where you stand.
What Is PAD?
Peripheral artery disease develops when plaque narrows the arteries that carry blood to your legs. As blood flow drops, your leg muscles may not get enough oxygen, especially during activity like walking or climbing stairs. For a closer look at what PAD is and how it progresses, read our full guide on the condition.
Warning Signs of Arterial Disease in the Legs
PAD symptoms often start small and get worse over time if the condition is not addressed. Common warning signs include:
- Pain with movement – cramping or aching in the legs, hips, or calves during walking that eases with rest.
- Pain at rest – burning or aching that can disrupt sleep, especially in the feet or toes.
- Temperature and color changes – coldness in one leg or foot compared with the other.
- Slow-healing wounds – sores on the feet or legs that take a long time to heal.
- Physical changes – numbness, tingling, hair loss, or shiny skin on the legs.
These signs can also point to other issues, so reviewing the full PAD symptoms and complications guide is a good next step, since a proper evaluation is the only way to know for sure.
Who Is at Risk for PAD?
Certain factors raise your risk of developing PAD, including:
- Being age 50 or older
- A history of smoking
- Diabetes
- High blood pressure
- High cholesterol
- A family history of vascular disease
Understanding the full risk factors for PAD can help you decide whether a screening makes sense for you.
Frequently Asked Questions
Next step
Know Where You Stand
Coronary heart disease and PAD share the same root cause, but PAD often shows up first in your legs. A quick risk assessment can help you understand your own risk before symptoms progress.
- National Heart, Lung, and Blood Institute (NHLBI). “Know the Differences: Cardiovascular Disease, Heart Disease, Coronary Heart Disease.” nhlbi.nih.gov
- American Heart Association. “Coronary Artery Disease – Coronary Heart Disease.” heart.org
- Cleveland Clinic. “Peripheral Artery Disease (PAD).” my.clevelandclinic.org/health/diseases/17357-peripheral-artery-disease-pad
Medical disclaimer: This content is provided for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified vascular specialist regarding any questions about your circulatory health.
