The growth of small moles on the body, and more and more, in addition to heredity, may also be related to ultraviolet rays, gene mutation and other factors.
1. Genetic factors: the formation of pigmented nevi has a certain genetic tendency, and for people with a similar medical history in the family, the chances of their reappearance will increase significantly.
2. Influence of ultraviolet rays: If you are exposed to ultraviolet rays for a long time, ultraviolet rays may lead to pigment deposition, melanocyte proliferation, and may also cause certain burns to the skin, and even lead to some genetic mutations in the skin, thus inducing nevus pigmentosus.
3. Genetic mutation: although the cause of nevus pigmentosus is not clear, some information shows that genetic mutation is also a cause of nevus pigmentosus.
Since there are many causes, the specific situation can be analyzed by a doctor’s consultation and other medical history.