There are many reasons for severe hair loss, the most common being due to excessive work stress, extreme anxiety, tension, and depression, which can lead to severe hair loss. Additionally, some women experience significant hair loss after childbirth, as women's hair is very sensitive. Typically, about six months after giving birth, hair loss may start to decrease gradually. Another condition that causes severe hair loss is related to certain diseases, such as hereditary androgenic alopecia, which can also lead to significant hair loss. Furthermore, frequent hair perming, dyeing, straightening, and other actions that damage hair quality can also lead to severe hair loss. Nutritional deficiencies and lack of vitamins can also cause this problem.