Macular degeneration is the leading cause of severe vision loss in people over age 60. It occurs when the small central portion of the retina, known as the macula, deteriorates. The retina is the light-sensing nerve tissue at the back of the eye. Because the disease develops as a person ages, it is often […]
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This topic provides information about sudden kidney failure. If you are looking for information about long-term kidney disease, see the topic Chronic Kidney Disease.
What is acute renal failure?
Acute renal failure means that your kidneys have suddenly stopped working. Your kidneys remove waste products and help balance water and salt and […]
What is acne vulgaris?
Acne vulgaris, or acne, is a skin problem that starts when oil and dead skin cells clog up your pores. Some people call it blackheads, blemishes, whiteheads, pimples, or zits. When you have just a few red spots, or pimples, you have a mild form of acne. Severe acne can mean hundreds […]
What is an anterior cruciate ligament (ACL) injury?
An anterior cruciate ligament, or ACL, injury is a tear in one of the knee ligaments that joins the upper leg bone with the lower leg bone. The ACL keeps the knee stable. See a picture of the knee and the ACL.
Injuries range from mild, such as a […]
