The hair fell one by one, and the heart broke again and again. Hair loss is a normal metabolism, and everyone will lose hair in life. Pathological alopecia refers to abnormal or excessive hair loss. In general, a normal adult is lose 50-60 hairs a day. More than 100 means hair loss . If you lose more than 100 hair s a day for two or more months, seek medical attention as soon as possible. A ccording to the severity and form of hair loss with the certain rules , t he medical profession generally divides the hair loss stage into seven stages . The first stage and the second stage belong to mild hair loss, the third stage and the fourth stage belong to severe hair loss. After the fourth stage , it is bald. The first stage The hairline is normal. Just adjust your schedule and strengthen your nutrition and exercise. The second stage The hairline moves back and the forehead is s...