There is a spot on my chest. Sometimes it is light and sometimes dark. What's going on?

When plaques form on the skin, they will cause local skin color to become abnormal. Most plaques are caused by heredity or long-term exposure to ultraviolet rays. Hereditary plaques will appear just after birth, while the latter appear at an irregular time, which is closely related to the patient's lifestyle. So why is there a spot on the chest that is sometimes light and sometimes dark?

First, why is there a spot on the chest that is sometimes light and sometimes dark? This kind of spot is usually caused by melanin deposition due to sunburn. The solution is to pay attention to sun protection, always apply sunscreen when putting on makeup, and use some blemish-lightening and whitening essence, and the spots can be eliminated quickly.

Second, there are many reasons for the formation of spots, one of which is genetics. Under the irradiation of ultraviolet rays, the tyrosinase activity of the basal layer of the spot genetic gene increases, forming melanin, that is, spots, also called genetic spots. It is formed during the fetal period and is a fixed body that is born with us. Spots are divided into visible spots and invisible spots. Visible spots begin to form at around 6-12 years old and reach their peak at around 18 years old; while invisible spots mostly appear on the face later. This is why some people divide spots into congenital spots and acquired spots.

Third, ultraviolet damage is one of the causes of spots. The ultraviolet rays in Yaliang stimulate the pigment cells under the skin to become active frequently, producing a large amount of melanin. At the same time, it damages the normal metabolic function of skin cells, making it impossible for melanin to be discharged smoothly and remain on the skin, or even precipitate in the dermis, deepening the spots. In addition, the cause of spots is also closely related to the metabolism of the stratum corneum of the skin. If the metabolism of the stratum corneum is good and active, when the melanin cells divide, they can be brought out of the epidermis in time, becoming dirt and separating from the skin. Conversely, the chance of getting spots will increase.

Why does a spot on my chest, which is sometimes light and sometimes dark, appear? I think it may be an allergic disease or caused by ruptured capillaries. It is recommended that you go to the hospital's dermatology department for a clear diagnosis and use symptomatic medication. Try using calamine lotion externally, eat more vegetables and fruits, avoid spicy and greasy seafood, and avoid scratching.