Black mole suddenly appeared on the back

Most moles are dark in color, which is a very normal skin phenomenon. Many people's moles are congenital, so it is also related to genetics, but some are acquired. If a black mole suddenly grows on your back, you should pay attention. A black mole that suddenly grows on the back may be a pigmented mole, which is mostly related to the accumulation of pigment. There is no need to be nervous if you don’t feel it, it won’t grow, and there is no pain.

1. What is the reason for a black mole suddenly growing on the back?

It may be a pigmented nevus, which is formed by the local accumulation of pigment cells. It is recommended not to rub it and observe the growth of the mole. If it grows rapidly or changes shape or causes pain in a short period of time, go to the hospital for treatment in time.

2. What causes black moles on the back?

1. Moles are caused by sunlight exposure. If your skin is exposed to the sun for a long time, it will easily cause skin cells to produce a large amount of melanin. If this melanin cannot be metabolized out of the body in time, it may accumulate in the epidermis and form moles.

2. Moles are caused by genetic reasons. This situation is the most common. Generally due to genetics, people may have moles when they are born. Some people develop moles around the age of five after birth. Girls are more likely to develop moles during puberty.

3. Relationship with endocrine system. In fact, the formation of moles is closely related to endocrine. For example, when a woman is pregnant or in puberty, her endocrine system undergoes drastic changes, which may affect the metabolism of melanin, causing melanin to accumulate in the skin and form moles.

4. Moles caused by bad living habits. If a person lacks sleep for a long time or often stays up late, it is easy for the pituitary gland to secrete a large amount of melanocyte-stimulating hormone, which will prompt melanocytes to produce a large amount of melanin, causing local skin to form moles or black patches due to the increase of melanin.