The prepuce is the narrow opening of the foreskin, so that the foreskin can not be turned up to reveal the head of the penis. Physiological prepuce and pathological prepuce, physiological prepuce is seen in almost every normal newborn and infant, with the development of the penis and penis head, generally after the age of 3-4 years old, the foreskin can be more upward retraction, flip the foreskin can reveal the head of the penis, so physiological prepuce does not need surgery. Pathological prepuce is mostly secondary to penile head circumcision and penile head trauma. Acute penile head circumcision and repeated foreskin infections can cause the foreskin mouth to gradually form a scar and lose elasticity, and the foreskin mouth has scar contracture formation, losing the elasticity and expansion ability of the skin, resulting in the foreskin not being able to retract upward.
The current consensus indications for circumcision are: 1. formation of a fibrous narrow ring at the foreskin mouth; 2. recurrent episodes of foreskin infection of the head of the penis.