Why Is a Newborn’s Lip Half Red and Half Blue?

Question

What is the reason for a newborn’s lip being half red and half blue?

Answer

Based on the description, a newborn’s lip being half red and half blue may be due to the phenomenon of choking on milk caused by eating too fast or too eagerly. This situation usually does not require excessive concern and can be resolved by adjusting the posture and speed of feeding. However, if this condition occurs frequently, it is advisable to rule out the possibility of congenital heart disease. In this case, it may be necessary to take the child for a cardiac Doppler ultrasound examination to determine if there is a congenital heart disease.