Health Information Library

A buildup of mucus in the nose, head and throat.

A buildup of fats, cholesterol and other substances in an artery and on the artery walls. Also called plaque.

A common childhood illness that causes painful sores in the mouth and throat.

A condition in which the body has too little vitamin B-12, a nutrient that is needed to make red blood cells and DNA.

A condition in which the body is too low on vitamin D, a nutrient that is important for bones, nerves, muscles and the immune system.

Cancer that occurs in the stomach.

A condition in which one or more of the parathyroid glands in the neck make too much hormone

A rare congenital heart defect, in which the left side of the heart doesn't form fully and is too small.

Irritation and swelling of the inner lining of the heart's chambers and valves. Usually caused by infection.

A break in the bone connecting the breastbone and shoulder. This also is known as a clavicle fracture.

A type of cancer that starts in the brain or spine.

A condition in which the knees bow apart even when standing with feet and ankles together, also known as bowlegs.

An injury to the tissue that connects the bones at the base of the thumb.

Inflammation of the cervix.

Any condition or disease that affects the bones.

Occurs when one or more bones in the spine weaken and crumple.

A fluid-filled sac in the breast that most often isn't cancer.

Learn about what a HER2-negative breast cancer diagnosis means and how it differs from other types of breast cancer.

A common form of arthritis that causes intense pain, swelling, redness and tenderness in joints.

Learn about this type of breast cancer and how it compares to other types. Find out how subtypes, grades and stages affect prognosis and treatment.