It's been three days. In the past, the first picture was taken naturally. The back two were taken with a little erection.
Hello, according to the description, the blackening of the back end of the glans in young people should be a normal physiological phenomenon. With the growth of age, the glans may have frequent erection and congestion, and the color may become darker. Generally, it is also related to the secretion of androgen in the body, so there is no need for special treatment.
Hello, the situation shown in the picture still belongs to the situation of slight congestion. For the current situation, a small amount of congestion will generally subside over time, which will not have an impact. In this case, it is also related to masturbation habits or local extrusion.
According to your picture above, the place of glans coronal groove is purple and cyan. Considering the normal phenomenon, it is mainly the local congestion caused by the long erection time recently, or too frequent sexual life and long glans congestion time. This is not a big problem. Don't have sex for the time being. Wash it with warm water often, and it will generally recover slowly.