Types of Angina
Recognizing the pattern of angina matters, because the type determines how urgent it is:- Stable angina: Predictable discomfort brought on by exertion or stress and relieved within minutes by rest or nitroglycerin.
- Unstable angina: New chest pain, pain at rest, or a stable pattern that becomes more frequent or severe — a medical emergency.
- Variant (vasospastic) angina: Caused by spasm of a coronary artery, often occurring at rest or overnight.
Causes and Risk Factors
The underlying problem is almost always atherosclerosis — the gradual buildup of plaque in the arteries. Risk factors include:- High cholesterol: Elevated LDL cholesterol drives plaque formation; see hypercholesterolemia.
- High blood pressure: Damages artery walls and accelerates narrowing.
- Diabetes: High blood sugar injures blood vessels throughout the body; see diabetes mellitus.
- Smoking: One of the strongest and most reversible risk factors.
- Family history and age: Risk rises with age and with early heart disease in close relatives.
Symptoms
Angina is usually felt as pressure, squeezing, heaviness, or burning in the center of the chest. The discomfort may spread to the shoulders, arms, neck, jaw, or back, and may come with shortness of breath, sweating, nausea, or unusual fatigue. Women, older adults, and people with diabetes are more likely to have subtle symptoms — breathlessness or exhaustion rather than classic chest pain. Episodes of stable angina typically last only a few minutes and are more likely in cold air, after heavy meals, or during emotional stress.Diagnosis
Evaluation typically includes an electrocardiogram, blood tests, and stress testing, in which the heart is monitored during exercise or with medication that mimics exertion. Depending on the results, your physician may recommend a coronary CT angiogram or cardiac catheterization to map blockages directly. Keeping a simple diary of when episodes occur and what brings them on helps your physician judge whether the pattern is stable or changing.Treatment
Treatment aims to relieve symptoms and prevent a heart attack, and cardiac rehabilitation along with a heart-healthy diet rounds out the plan:- Nitrates: Long-acting isosorbide mononitrate or isosorbide dinitrate prevent episodes, while sublingual nitroglycerin relieves an attack in progress.
- Beta-blockers: Medications such as metoprolol slow the heart and reduce its oxygen demand.
- Calcium channel blockers: Medications such as amlodipine relax coronary arteries and lower blood pressure.
- Ranolazine: An option when angina persists despite standard therapy.
- Statins and aspirin: Medications such as atorvastatin stabilize plaque and lower cholesterol, while low-dose aspirin reduces clot risk.
- Procedures: Stenting or bypass surgery may be recommended when blockages are severe or symptoms persist.
When to Seek Immediate Care
Call 911 for chest pain that lasts more than a few minutes, occurs at rest, or comes with sweating, nausea, lightheadedness, or shortness of breath — these can signal a heart attack. Do not drive yourself to the hospital. Angina is a signal to treat heart disease aggressively, and most patients do well with the right combination of medication and risk-factor control. The internal-medicine team at Zimmer Medical Group coordinates testing, medications, and cardiology referrals when needed.Living With Angina Day to Day
The medications listed above only work if they are taken in a particular way, and a few everyday decisions decide how often episodes occur and how safely they end.
Nitroglycerin: how to carry it and when to call
Sublingual nitroglycerin belongs in a pocket or bag at all times, in its original dark bottle, and is replaced on the date the pharmacy prints because opened tablets lose potency. Sit down before taking it, since it drops blood pressure. If the discomfort has not eased five minutes after the first tablet, call 911 rather than waiting to work through three doses; a second and third tablet can be taken while help is on the way. Needing it more often than usual, or for less exertion, is unstable angina even if each episode still responds.
Nitrates and erectile dysfunction medication do not mix
Sildenafil and tadalafil taken within a day or two of any nitrate, including isosorbide mononitrate, can cause a dangerous fall in blood pressure. Erectile dysfunction is common alongside coronary disease and treatable, but the plan has to be made with the prescriber rather than around them.
Taking the preventive medications properly
Metoprolol is not stopped suddenly, because the rebound rise in heart rate can provoke an episode or worse; missed doses are resumed, not doubled. A high-intensity statin such as atorvastatin or rosuvastatin is continued regardless of the cholesterol number, with ezetimibe added when LDL stays above target; our statins guide covers side effects and alternatives. Daily aspirin, or clopidogrel after a stent, is not paused for a dental visit or minor procedure without asking. Cardiac rehabilitation after a diagnosis of coronary artery disease reduces later events, is covered by Medicare, and is the part of the plan most often skipped.
Heat, meals, and effort in Florida
Humidity and heat raise the heart's workload for the same activity, so summer exertion moves to early morning or air conditioning, with more water and a slower pace; our heat safety guide sets out the limits. Walking after a large meal, rushing across a parking lot, and lifting luggage are the common local triggers. A structured program such as our 30-day walking challenge builds tolerance gradually, and a Mediterranean-style diet, described in our heart-healthy eating plan, is the pattern with the best evidence.
Chest pain that is not angina, and angina with clear arteries
Reflux, esophageal spasm, chest wall pain, pericarditis, and panic attacks all mimic angina, and our reflux versus heart attack article tells them apart; when in doubt, it is treated as cardiac until proven otherwise. Typical angina with no blockage on catheterization is usually microvascular or spasm-related, more common in women, and real; it responds to ranolazine, calcium channel blockers such as diltiazem, and the same risk-factor control. Our cardiovascular team coordinates testing and cardiology follow-up. The NHLBI and the MedlinePlus publish patient guidance on living with angina.
If you are using nitroglycerin more often than you were a month ago, or were diagnosed with angina and never offered cardiac rehabilitation, schedule a visit.