The common causes of skin spots are heredity, ultraviolet radiation, endocrine disorders and improper skin care. 1. Heredity: Some people have spots on their skin, which are usually related to congenital genetic factors, for example, if parents have pigmentation on their face, the chances of their offspring having pigmentation on their face will be relatively high, and the more common ones are freckles. 2. Ultraviolet radiation: If you don’t pay attention to sun protection, your skin is often exposed to ultraviolet radiation, which will easily lead to the deposition of a large number of melanin particles, thus leading to skin discoloration. 3. Endocrine imbalance: If you do not have a regular daily routine, often stay up late, or have too much mental pressure, it will easily lead to endocrine imbalance, which will lead to skin discoloration. 4. Improper skin care: If there is improper skin care in normal times, which leads to the imbalance of skin water and oil, it is also easier to develop pigmentation. It is recommended to go to the relevant departments of regular hospitals for consultation to clarify the causes and types of pigmentation, and then follow the doctor’s instructions to adopt corresponding solutions.