Health Information Library

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

A condition in which the tissue that links muscle to bone becomes inflamed.

Swelling of the tissues, called tendons, that connect muscle to the bone in the hip joint.

A disease that can happen when a person doesn't receive proper treatment for strep throat or scarlet fever.