Types of Angina
There are three distinct types of angina: stable angina, unstable angina and variant (prinzmetal's) angina.
Stable Angina: The most common form of angina occurs when the heart is working harder than usual. A person can predict when it may happen, for example, during certain activities. It is usually relieved with rest or with angina medications.
Unstable Angina: Unlike stable angina, unstable angina does not follow a predictable pattern. It can happen during strenuous activity or at rest and isn't always relieved with rest and medication. It is a serious condition and may be indicative of an impeding heart attack.
Prinzmetal's or Variant Angina: This rarest form of angina usually occurs at rest during sleeping hours. It is usually easily treated with medication.