Discussing the causes and recommended medical examinations for the pricking pain in the upper left chest, around the heart and lung areas, in a 16-year-old girl.

Explore the causes and treatment methods of abnormal coronary artery perfusion pressure, especially the coping strategies in the pediatric field.

A 5-month-old child was found to have a heart murmur during a check-up. Could this be a symptom of congenital heart disease?

A rapid heartbeat in children may be caused by viral infections, excessive exercise, or insufficient rest, among other reasons.