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.)
Medical Definition of angina pectoris. : a disease marked by brief sudden attacks of chest pain or discomfort caused by deficient oxygenation of the heart muscles usually due to impaired blood flow to the heart âChest pain may be accompanied by other symptoms (such as nausea, shortness of breath, or pain in the neck, shoulder, jaw, arm, or back).