What is the difference between an angina and a heart attack?

Angina and heart attack are both conditions related to the heart, but they differ in causes, symptoms, and severity.

1. Cause:

   • Angina is caused by reduced blood flow to the heart muscles, which is usually due to the narrowing or blockage of the coronary arteries. This reduced blood flow means that the heart muscle isn't getting enough oxygen, which causes the chest pain known as angina.
   • A heart attack, on the other hand, occurs when the blood supply to a part of the heart is completely blocked, often by a blood clot. This can cause part of the heart muscle to be damaged or die.

2. Symptoms:

   • Angina typically causes discomfort or pain in the chest that can often be described as pressure, squeezing, or heaviness. This pain can sometimes spread to the arms, neck, jaw, shoulder, or back. Angina is usually triggered by physical exertion or stress and typically lasts for just a few minutes.
   • A heart attack also causes chest pain, but this pain is usually more intense and lasts longer than angina pain. Other symptoms of a heart attack can include shortness of breath, nausea, vomiting, lightheadedness, and a cold sweat. Unlike angina, a heart attack can occur at any time, not just during physical exertion or stress.

3. Severity:

   • Angina is often a warning sign that you're at risk of a heart attack. While it's serious and needs to be evaluated and treated, it doesn't cause permanent damage to the heart muscle.
   • A heart attack is a medical emergency. It can cause permanent damage to the heart muscle and can be life-threatening.

In summary, while both angina and a heart attack involve chest pain due to reduced blood flow to the heart, a heart attack is generally more severe and occurs when the blood supply is completely blocked, leading to damage or death of part of the heart muscle.