An inflamed blister that forms beneath the epidermis after vigorous or repeated rubbing of the skin, e.g., on the toes or heels during sports activities. a collection of fluid, usually serum, between the layers of the skin, causing an elevated lesion.Caused by friction, burns, local allergic responses, e.g. stings.nless a blister is painful or interferes with function because of its size, it should not be punctured. If puncturing is required, it should be done aseptically, with the skin left in place. A sterile pressure bandage should then be applied.
Unstable angina (UA) is a type of angina pectoris that is irregular.It is also classified as a type of acute coronary syndrome. It can be difficult to distinguish unstable angina from nonâQ-wave myocardial infarction.nstable angina (UA) is a type of angina pectoris that is irregular.
Unstable angina. Unstable angina symptoms are similar to a heart attack. Call 911 or other emergency services immediately if you think you are having a heart attack or unstable angina. People who have unstable angina often describe their symptoms as: 1  Starting within the past 2 months and becoming more severe.nstable angina symptoms are similar to a heart attack. Call 911 or other emergency services immediately if you think you are having a heart attack or unstable angina. People who have unstable angina often describe their symptoms as: 1  Starting within the past 2 months and becoming more severe.