In women with acne on the forehead, it is recommended to observe whether there are other manifestations. For example, breast development, breast pain with hard nodes, vaginal discharge, early onset of menstruation, or other secondary sexual characteristics such as pubic hair and axillary hair, accompanied by forehead acne. If these symptoms appear before the age of 10, it is considered precocious puberty. It is recommended to go to the child growth department of the hospital to check the sex hormone six items and measure the bone age. To diagnose whether there is precocious puberty, avoid eating some anti-seasonal fruits, artificial feed farmed chicken, duck and fish.