Angina
Chest pressure or pain from reduced blood flow to the heart
Quick Facts
- Type: Cardiovascular symptom
- Underlying cause: Reduced blood flow to the heart muscle
- Common trigger: Exertion, stress, cold, heavy meals
- Emergency if: Pain at rest, lasting, or with new severe symptoms
Overview
Angina is chest pain, pressure, squeezing, or tightness that occurs when the heart muscle does not receive enough oxygen-rich blood. It is not a disease itself but a symptom, usually of coronary artery disease, in which the arteries that supply the heart become narrowed by fatty buildup. Angina is an important warning sign that the heart is under strain.
Many people describe angina as a heaviness, fullness, or band-like pressure across the chest, which may spread to the arms, neck, jaw, shoulder, or back. Stable angina follows a predictable pattern, often brought on by exertion or stress and relieved by rest. Unstable angina is new, more frequent, or occurs at rest and is a medical emergency because it can signal an impending heart attack.
Because angina is a warning that the heart is not getting enough blood, it should never be ignored, even when it settles with rest. Recognizing it early gives a chance to treat the underlying narrowing of the arteries and lower the risk of a heart attack. It also matters that angina does not always feel like classic chest pain, particularly in women, older adults, and people with diabetes, so any unexplained pressure, breathlessness, or discomfort with exertion deserves attention.
Common Causes
Angina results from an imbalance between the heart's demand for blood and the supply it receives:
- Coronary artery disease: The most common cause, where atherosclerosis (fatty plaque) narrows the heart's arteries.
- Physical exertion or stress: Activities that make the heart work harder can trigger pain when arteries are narrowed.
- Coronary artery spasm: A temporary tightening of an artery that briefly cuts blood flow.
- Cold weather, heavy meals, or strong emotions: Common triggers in people with heart disease.
- Anemia or rapid heart rhythms: Reduce oxygen delivery or increase the heart's demand.
Risk factors include high blood pressure, high cholesterol, diabetes, smoking, and a family history of heart disease.
Associated Symptoms
Angina often comes with other symptoms that help signal that the discomfort is coming from the heart:
- Pressure, squeezing, or pain spreading to the arm, jaw, neck, shoulder, or back
- Shortness of breath
- Sweating, nausea, or lightheadedness
- Fatigue, especially in women and older adults
- A sense of indigestion or fullness
Women, older adults, and people with diabetes may have less typical symptoms, such as breathlessness, fatigue, or jaw or back discomfort instead of obvious chest pain. Any new, severe, or rest-related episode should be treated as an emergency.
Diagnosis & Evaluation
Doctors assess angina by reviewing the pattern of symptoms and the risk for heart disease. Tests may include:
- Electrocardiogram (ECG): Records the heart's electrical activity and can show strain or a heart attack.
- Stress test: Monitors the heart during exercise or with medication to see how it responds to demand.
- Blood tests: Cardiac enzymes to check for heart muscle damage, plus cholesterol and other markers.
- Imaging: Echocardiogram, coronary CT, or angiography to view the heart and its arteries.
These tests confirm whether the chest pain is from the heart and how severe the underlying disease is.
Treatment & Management
Treatment aims to relieve symptoms, improve blood flow, and lower the risk of a heart attack:
- Medications: Nitroglycerin relieves acute angina; other drugs (such as beta-blockers, aspirin, statins, and blood pressure medicines) reduce the heart's workload and slow disease progression.
- Lifestyle changes: Quitting smoking, eating a heart-healthy diet, staying active as advised, and managing weight, blood pressure, cholesterol, and diabetes.
- Procedures: Angioplasty with a stent or bypass surgery may be needed to restore blood flow in significant blockages.
- Knowing your pattern: People with stable angina learn their triggers and how to use prescribed nitroglycerin.
Never ignore a change in your usual angina. New, worsening, or rest-related chest pain needs urgent evaluation.
When to See a Doctor
Call emergency services immediately if you have chest pain or pressure that is new, severe, lasts more than a few minutes, occurs at rest, or is not relieved by rest or your usual nitroglycerin, especially with shortness of breath, sweating, nausea, or pain spreading to the arm or jaw. These can be signs of a heart attack, and fast treatment saves heart muscle and lives.
See a doctor promptly if you develop chest discomfort with exertion for the first time, or if known stable angina becomes more frequent, more intense, or easier to provoke. These changes need urgent medical review.
Frequently Asked Questions
What does angina feel like?
Angina usually feels like pressure, squeezing, heaviness, or tightness in the chest, sometimes spreading to the arm, jaw, neck, or back. It may come with shortness of breath, sweating, or nausea. It is often triggered by exertion and eased by rest.
Is angina the same as a heart attack?
No. Angina is chest pain from reduced blood flow that usually eases with rest, while a heart attack involves blocked blood flow that damages heart muscle. Unstable angina, new or at rest, can precede a heart attack and is an emergency.
What is the difference between stable and unstable angina?
Stable angina follows a predictable pattern, brought on by exertion and relieved by rest. Unstable angina is new, more frequent, more severe, or happens at rest. Unstable angina is a medical emergency requiring immediate care.
When should I call emergency services for chest pain?
Call immediately if chest pain is new, severe, lasts more than a few minutes, occurs at rest, or is not relieved by rest or nitroglycerin, especially with breathlessness, sweating, nausea, or pain in the arm or jaw.
Can angina be treated?
Yes. Treatment includes medications such as nitroglycerin and heart-protective drugs, lifestyle changes, and sometimes procedures like stents or bypass surgery to restore blood flow. Managing blood pressure, cholesterol, and smoking is key.
References
- American Heart Association. Angina (Chest Pain).
- Mayo Clinic. Angina — Symptoms and causes.
- National Heart, Lung, and Blood Institute (NHLBI). Angina.
- MedlinePlus, U.S. National Library of Medicine. Angina.