What physiological condition is defined as a nonretractable foreskin in newborns?

Phimosis is the physiological condition characterized by a nonretractable foreskin in newborns. In this condition, the prepuce (foreskin) is unable to be pulled back over the glans penis due to its tightness. This is often a normal finding in infants, as the foreskin usually separates from the glans naturally as they grow, typically by around age three. Most instances of phimosis in newborns do not require intervention, as they tend to resolve spontaneously over time.

Other conditions listed have different meanings: ectopia generally refers to an abnormal position or location of an organ or body part, while hypospadias describes a congenital condition where the urethral opening is located on the underside of the penis rather than at the tip. Epispadias is the counterpart condition where the urethral opening is located on the upper side of the penis. Understanding the specific definitions of these conditions is crucial for recognizing and appropriately managing neonatal issues.