Stretch marks are long, narrow streaks, stripes or lines that develop on the skin and which differ in hue from the surrounding skin. They are the result of a sudden stretching of the skin and are extremely common. Anyone can develop stretch marks, although they tend to affect more women than men.
Prinzmetal's angina is a form of unstable angina, meaning it usually occurs at rest, between the hours of midnight and early morning, and there's no predictable pattern to bouts of pain. (This is in contrast to stable angina, which is predictable pain caused by exercise or exertion.)
Related terms: vasospasm, variant angina, Prinzmetal's angina. Sometimes a coronary artery (one of the vessels supplying blood to the heart muscle) goes into spasm. This is also called vasospasm, and doctors are unsure of its cause.The spasm briefly narrows the coronary artery, so your heart does not get enough blood.oronary artery spasm causes a rare type of angina pectoris called variant angina pectoris (or Prinzmetal's angina). Angina pectoris is a squeezing, suffocating, or burning feeling in the chest. Unlike typical angina, variant angina usually happens during times of rest.