Is it normal for a baby's penis to often become hard?

Patient's question:

No

Doctor's answer:

The situation of the baby is very normal, mostly caused by local stimulation, which is a normal physiological phenomenon. There is no need to worry. The erection of infants and young children is different from that of adults; it is a natural response. It may occur when the baby needs to urinate, when sleeping, or when the local temperature is too high.