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.
Stable angina does not typically occur more frequently or worsen over time. Unstable angina is chest pain that happens suddenly and becomes worse over time. It occurs seemingly without causeâyou may be at rest or even asleep. An attack of unstable angina may lead to a heart attack.oronary heart disease caused by a buildup of plaque (fatty deposits) along the walls of your arteries (atherosclerosis) is the principal cause of unstable angina. The plaque causes your arteries to narrow and become rigid. That constricts blood flow to your heart.