This refers to a condition in which the heart muscle becomes inflamed due to a viral infection. It can cause the heart to beat abnormally and can lead to decreased function of the heart. In children, symptoms may include fatigue, chest pain, and shortness of breath. If your child is experiencing these symptoms, it is important to seek medical attention right away. A trained cardiologist specialising in pediatric population will be the best placed physician to be able to diagnose and treat the condition, which can help to prevent any further complications.