The most common cause of hair loss is generally related to genetic factors. For instance, if parents experience hair loss, their children are likely to encounter the same issue. Hair loss can also be associated with hormonal imbalances; an excessive secretion of male hormones can lead to hair loss. It is related to infection factors as well, such as infection with Malassezia bacteria on the scalp, which can cause erythema and papules on the head, and significant hair loss with dandruff. Psychological factors also play a significant role in hair loss. Excessive mental stress, anxiety, and poor sleep can lead to the release of stress-related substances by the body, causing the hair follicle growth cycle to shorten and leading to hair loss. Therefore, it is advisable to visit a dermatology department at a reputable hospital for a timely examination to identify the specific causes and undergo treatment under a doctor's guidance with appropriate medications.