What causes a man's genitals to be black?

Men not only have penises, but women also have vaginas. However, many people have dark genitals due to various reasons. Once the genitals have become dark and itchy, active treatment is needed. It is not the case that you can just take medicine casually when you have a dark vagina problem. So what is the reason for a man's dark genitals?

The scrotum is like a thin and flexible leather bag, growing between the base of the penis and the perineum. When a person stands, it hangs there, connected to the pubic region, penis skin, inner thigh skin and perineal skin. From the outside, there is a longitudinal scrotal suture on its midline, which is a trace left by the embryonic development.

The scrotal skin is soft and weak, smooth and elastic, with sparse and curly pubic hair. Under the skin is only a layer of tunica fascia, which is mainly composed of smooth muscle, containing dense connective tissue and a lot of elastic fibers. The front and back walls of the tunica fascia have fibers extending to the deep layer in the midline and connecting to each other to form a diaphragm, dividing the scrotum into two small pockets on the left and right, which contain the left and right testicles and epididymis respectively.

There are abundant blood vessels flowing through the tunica carnosus. There are also several layers of fascia and levator testis muscle under the tunica carnosus, which are mainly composed of the aponeurosis of the abdominal wall muscles and the continuation of muscle fibers. There is also a spermatic cord in the scrotum, which is a round cord composed of the vas deferens, testicular artery, venous plexus, many small blood vessels, nerve plexus, lymphatic vessels and capsule.

As for the dark color of the scrotal skin, it is affected by sex hormones. Originally, a person's skin color depends on various pigments, especially the amount of melanin, the thickness of the skin, and the contraction or relaxation of blood vessels. The important factor affecting the melanin deposition of the skin is sex hormones. The concentration of sex hormones in the sex organs and other parts is high. As a result of long-term hormone stimulation, a large amount of melanin is deposited and the skin color becomes very dark, especially after wrinkles and thickening. Based on the same reason, you may have noticed that the color of the nipples and the surrounding areola of adult men is also quite dark! The sex hormone level of little boys is very low, so the skin color does not change much, and the scrotum is similar to the surrounding skin color. This change in pigmentation will only appear after entering puberty.

In summary, once the patient has the problem of black genitals, do not use ointments randomly. And the patient should not eat spicy food casually. Otherwise, it will cause great harm. And the patient should not eat spicy food. Otherwise, it will cause great harm.