Overview

Endocarditis is a life-threatening inflammation of the inner lining of your heart's chambers and valves (endocardium).

Endocarditis is usually caused by an infection. Bacteria, fungi or other germs from another part of your body, such as your mouth, spread through your bloodstream and attach to damaged areas in your heart. If it's not treated quickly, endocarditis can damage or destroy your heart valves. Treatments for endocarditis include medications and, sometimes, surgery.

People at greatest risk of endocarditis usually have damaged heart valves, artificial heart valves or other heart defects.