Cardiomyopathy is any disease of the heart muscle in which the heart loses its ability to pump blood effectively.

Detailed information on complex heart problems

Heart failure is when the heart can't pump enough blood to the body. In children, it is often caused by a congenital heart defect.

Detailed information on congenital heart disease, including patent ductus arteriosus, atrial septal defect, ventricular septal defect, atrioventricular canal, tricuspid atresia, pulmonary atresia, transposition of the great arteries, tetralogy of Fallot, double outlet right ventricle, truncus arteriosus, coarctation of the aorta, aortic stenosis, and hypoplastic left heart syndrome

Cardiac catheterization is a procedure in which a long, flexible tube (catheter) is put into a blood vessel. The doctor then guides the catheter into the heart to find and treat heart problems.

The atrial septum is the wall between the two upper chambers of the heart (right and left atria). An atrial septal defect (ASD) is an abnormal hole in this wall. ASD is a heart problem that is present at birth (congenital). Read on for details about symptoms, diagnosis, and treatment.

Detailed information on healthy lifestyle choices for teenagers

An arrhythmia is an abnormal rhythm of the heart. In an arrhythmia, abnormal electrical signals through the heart muscle may cause the heart to beat too fast (tachycardia), too slow (bradycardia), or irregularly. Read on to learn more.

Detailed information on viral exanthems (rashes)

Detailed information on viral skin infections, including Herpes Zoster (Shingles), Pityriasis Rosea, Warts, and Molluscum Contagiosum