Pediatric cardiology is a specialized branch of medicine dedicated to diagnosing and treating heart conditions in children, from newborns to adolescents. It covers a wide range of concerns, including congenital heart defects (present at birth), arrhythmias (irregular heart rhythms), and acquired heart diseases such as Kawasaki disease and rheumatic fever. Pediatric cardiologists collaborate closely with primary care doctors and other specialists to provide comprehensive, coordinated care for young patients with heart conditions.