The prepuce is the foreskin covers most or all of the head of the penis or even the urethral opening, but can be turned up to reveal the head of the penis. After marriage, it will lead to various gynecological diseases in the spouse, and the chance of HIV infection will increase with long foreskin or prepuce.
The foreskin cannot be turned up to reveal the glans, and when it is forcibly turned over, the narrow foreskin mouth forms a tight narrow ring in the coronal groove, which obstructs the blood flow back to the penis head, and the foreskin cannot be turned back to its original position. If the foreskin mouth is severely narrowed, urination is not smooth, and the foreskin sac fills up first in an autumnal shape when urinating, and then urine is discharged. If it is narrow for a long time, it will easily lead to urinary system infection and urinary retention, which will damage the kidney function.
Therefore, those who are overcircumcised or circumcised should have their overcircumcised foreskin removed as early as possible.