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.)
The large coronary arteries may be normal. Syndrome X cardiac disease describes decreased blood flow to the heart muscle with normal coronary arteries not caused by vasospasm that is seen in Prinzmetal angina. This may be a variant of microvascular angina.sually, there has to be at least a 50% narrowing of a coronary artery to cause symptoms. Prinzmetal angina describes pain that is caused when a coronary artery goes into spasm temporarily decreasing blood supply to a section of heart muscle.