Six major internal causes 1, stress: When people are under pressure, they secrete adrenaline to prepare for dealing with stress. If subjected to long-term stress, the balance of the body’s metabolism will be disrupted, the supply of nutrients needed by the skin tends to slow down, and the pigment mother cells will become very active. 2, hormonal imbalance: the female hormone estrogen contained in the pill will stimulate the secretion of mellanin cells and form uneven spots. The spots formed by the pill will stop after the interruption of taking the pill, but they will still stay on the skin for a long time. In pregnancy, due to the increase of female hormone estrogen, spots will easily appear from the 4th to 5th month of pregnancy, and most of the spots that appear at this time will disappear after delivery. However, abnormal metabolism, exposure to strong UV rays and mental stress can deepen the spots. Sometimes the newly grown spots will not disappear after delivery, so you need to pay more attention to them. 3.Slow metabolism: spots will appear when the metabolism of liver is not normal or when the ovarian function is diminished. The problem of pigmentation will be aggravated by poor metabolism or endocrine disorder when the body is in a sensitive state. Constipation can form spots, which are actually formed by endocrine disorders that cause allergies. When the body state is not normal, ultraviolet radiation will also accelerate the formation of spots. 4.Internal organs: Chinese medicine believes that the skin is closely related to the internal organs, meridians, qi and blood, etc. Only if the internal organs function normally, the qi and blood are full and the meridians are smooth, the body and the face are not easy to age, the skin is smooth and delicate, and no spots will be produced. If the internal organs are dysfunctional, the meridians are blocked and the Qi and blood are insufficient, it can be reflected on the face. Chloasma is related to the dysfunction of the internal organs, Qi and blood, and Chong Ren, and is a reflection of the disease of the whole body. Dysfunction of liver, spleen and kidney can lead to chloasma, for example, depression of emotion and will lead to depression of liver qi, which will cause discordance of qi and blood on the face and stagnation of qi and blood, causing chloasma. 5.Female gynecological lesions: If the spots are caused by gynecological diseases, there will usually be abnormal leucorrhea. Gynecological diseases have a rather long process from latent to onset. The sudden growth of spots indicates that there is an abnormality in the body, which should be paid enough attention. For example, the discoloration around the eyes is mostly caused by uterine diseases, patients with frequent pregnancy termination and miscarriage experience; cheek spots are mostly seen in liver diseases and menopause; chin discoloration is more closely related to gynecological diseases and cold sensation; discoloration at the middle of the person under the nose is often caused by ovarian dysfunction. 6.Sleep: the skin blood vessels are more open during sleep, which can replenish skin nutrients and oxygen and take away various excretions; the secretion of growth hormone increases, which can promote skin renewal and repair and keep skin tender and elastic; the antioxidant enzyme activity of human body is higher, which can remove free radicals in the body more effectively and keep the skin young. Once the sleep is not good, the above functions cannot be completed. The appearance of spots will be easy. Four external factors 1, ultraviolet ray: when irradiating ultraviolet ray, the body will produce a lot of mellitin pigment in the basal layer in order to protect the skin. So in order to protect the skin will gather more pigments in the sensitive parts. Frequent exposure to strong sunlight not only promotes skin aging, but also causes pigmentation skin disorders such as dark spots and freckles. 2, bad cleaning habits: because of strong cleaning habits to make the skin become sensitive, this will stimulate the skin itself. When the skin is sensitive, the body will secrete a lot of melanin pigment in order to protect the skin, and when there is excess pigment, there will be spots, blemishes and other skin pigmentation problems. 3, the wrong use of cosmetics: the use of cosmetics not suitable for their skin (such as products containing photosensitive and heavy metals), resulting in skin allergies, in the process of treatment such as excessive exposure to ultraviolet light, the skin will be in order to resist external aggression, in the inflammatory parts of the collection of mellanin pigment, so that pigmentation will appear. 4.Trauma formation: Due to the traumatic skin surface, such as damaged scars left behind after the recovery of damaged skin, the accumulation of melanin forms traumatic pigmentation, possibly due to inattention when removing dark spots, freckles, etc., and the use of overly stimulating whitening products, resulting in the production of traumatic pigmentation. 5.Other: Genetic genes: If there are parents with long spots, the probability of having long spots is very high, which can be judged as the role of genetic genes to a certain extent. Therefore, those who have long spots in their family should pay attention to avoid UV radiation, which is one of the important factors triggering spots. This is a must for the prevention of spots.