Is Child Erection Normal?

If you notice a baby's erection during his bath or when changing his diaper, it's normal to feel a little concerned. But in most cases, your baby's erections are not a cause for worry. Erections are common in children during their infant and toddler years, according to KidsHealth. In addition to being erect, you may notice that your child's penis seems abnormally large during his newborn days. Maternal birth hormones and the trauma of birth cause this additional girth; it usually subsides within a few days.