Although rare, children can also suffer from serious heart conditions. Some may exhibit signs of heart failure at birth, including failure to thrive, cyanosis, or weak pulses. Conditions like long QT syndrome, Kawasaki disease, rheumatic fever, and commotio cordis are examples of childhood diseases that can affect the heart throughout a person’s life. Since children are resilient and rapidly growing, these conditions may not be detected initially, but over time can cause symptoms like chest pain, palpitations, and syncope. These symptoms may worsen with exercise and warrant further investigation. Early detection and intervention are important to ensure these conditions are properly managed for the best possible outcomes and quality of life in pediatric patients.