You can observe whether your hairline has moved backward from the symptoms. A receding hairline is more common in seborrheic alopecia. If you are a man, the hair on both sides of the forehead will become thinner at the beginning, and the hair on the top of the head will start to fall off, and then the forehead will look higher, and the hair will be in the shape of an “M”, which indicates that the hairline has receded. If you are a woman, there will be obvious hair loss symptoms before the receding hairline, which will be manifested as the hair on the top of the head gradually becomes thinner, the forehead looks wider and wider when combing the hair, and if you lift the hair in the middle of the forehead with one hand, the hair between the temples, it will become finer and softer, which indicates that hair loss is more serious, and there is a receding hairline as well. The most direct cause of receding hairline is hair loss, related to heredity, frequent perming and dyeing, it is recommended to go to the hospital for examination, to clarify the type of hair loss, targeted treatment.