Sudden growth of black spots on the face may be caused by pigmented nevus, freckles, melanoma and other diseases.
1. Pigmented nevus: pigmented nevus is a benign growth composed of nevus cells, which belongs to common benign skin tumors and can be distributed in any part of the skin. It can be distributed in any part of the skin. It manifests itself as a black papule or rash with uniform color. Its etiology is not yet clear, it may be caused by congenital heredity, developmental defects and other factors, or it may be induced by drugs, trauma, hormone level changes and other factors. Patients usually have no obvious symptoms, and a few of them may be accompanied by itching or pain.
2. Freckles: mostly related to heredity, can be induced after exposure to sunlight, and can also lead to sudden black spots on the face. It is usually removed by cosmetic laser.
3. Melanoma: The cause of melanoma is not yet clear, and it is related to heredity, excessive ultraviolet exposure, history of sunburn, and weakened immune system. Patients may develop new pigmented spots on the skin that grow irregularly, accompanied by itching, pain, ulcers and other symptoms.
There are many reasons for the sudden growth of dark spots on the face, and it is recommended that patients go to a regular hospital, identify the cause of the disease, and actively take relevant treatment measures.