Normally the male coronal sulcus has a grooved configuration.
The coronal sulcus is a ring of grooves on the lower edge of the glans of the male penis, which is visible behind the glans when the foreskin is turned over, and appears as a ring of narrowed areas. The anterior end of the urethral spongy body expands to form the glans, and the space between the glans and the penis is the coronal sulcus.
This part of the nerve distribution is very much, the base of the glans is very sensitive parts, most of the sexual intercourse and masturbation to stimulate this place, to achieve orgasmic ejaculation.
In addition, some people are born with a long foreskin, the coronal sulcus can not be exposed, it is difficult to clean, time is easy to inflammation. In this case, the foreskin can be repeatedly flipped in the bath in the early days, but after development and maturity, circumcision should be carried out to expose the glans coronal groove and prevent inflammation.
If you feel discomfort in the coronal groove, it is recommended to go to the hospital in time for treatment.