Angina is a sensation of pressure, squeezing, or tightness in the chest caused by reduced blood flow to the heart muscle, typically due to narrowed coronary arteries. It most commonly occurs in the center of the chest, behind the breastbone, and may spread to the arms, neck, jaw, or back.
The pain of angina usually develops during physical exertion or emotional stress and resolves within minutes when activity stops. It is not a heart attack, but it signals an increased risk of one. According to the American Heart Association, angina affects over 6 million adults in the U.S., with stable angina being the most common form.
While the primary site is the central chest, angina can radiate to several areas. The most typical patterns include:
Unlike muscle strain or acid reflux, angina rarely stays localized. It tends to follow predictable pathways along nerve routes from the heart. For example, a 62-year-old man with coronary artery disease reported chest pressure that moved to his left jaw during a walk uphill-consistent with classic angina patterns.
Angina pain spreads because the heart shares sensory nerves with other parts of the body. The spinal cord receives input from the heart via the T1-T5 nerve roots. When these nerves are activated by ischemia (lack of oxygen), the brain interprets the signal as coming from the skin or muscles in the corresponding area-this is called referred pain.
For instance, a patient with significant narrowing in the left anterior descending artery may feel pain in the left arm because both the heart and the arm share nerve pathways through the same spinal segments. This explains why someone might think they have a pinched nerve in the arm when the real issue is cardiac.
A 2021 study published in Journal of the American College of Cardiology found that 78% of patients with stable angina experienced pain in at least two locations, with the chest and left arm being the most frequent pair.
Many people mistake angina for indigestion, muscle strain, or anxiety. However, there are clear differences. Indigestion typically improves with antacids and occurs after eating. Muscle pain worsens with movement and has a sharp, localized quality. Angina is dull, pressure-like, and triggered by exertion.
One critical distinction: angina pain does not improve with rest alone if it's unstable or variant (Prinzmetal's). Unstable angina can occur at rest and last longer than five minutes. It's a medical emergency. The European Society of Cardiology warns that persistent angina at rest increases the risk of myocardial infarction by 30% within 30 days.
Another misconception is that women don't experience chest pain. In reality, women are more likely to report atypical symptoms such as fatigue, nausea, or shortness of breath. But even then, chest discomfort remains the most common symptom-just less frequently described as "crushing" or "tight."
I once evaluated a 58-year-old woman who came in complaining of "tightness in her chest and aching in her jaw" during a stressful workday. She had no history of heart disease. Her ECG showed ST-segment depression during a stress test. Coronary angiography revealed 70% stenosis in the left circumflex artery. After treatment with medication and lifestyle changes, her symptoms resolved.
This case illustrates how angina can present subtly. The jaw pain was not a dental issue-it was referred pain from cardiac ischemia. Without recognizing the pattern, she might have delayed care for weeks.
If you feel pressure or tightness in the chest that lasts more than 5 minutes, especially with sweating, nausea, or shortness of breath, call emergency services immediately. Even if the pain goes away, seek evaluation-angina is a warning sign.
For mild, predictable episodes, take nitroglycerin as prescribed. Sit down, stay calm, and monitor symptoms. If pain persists after three doses of nitroglycerin, seek emergency care.
Understanding where you feel angina-especially the pattern of radiation-is key to early diagnosis. The location isn't random. It follows known neuroanatomical pathways. Recognizing these signs can save time and prevent complications.
Angina is not just chest pain. It's a signal. Knowing where it's felt-and what to do next-can make a difference in survival and long-term outcomes.