If you stay up late less often, you will not usually experience hair loss symptoms. However, if you stay up late often, it will affect your body function and you may experience hair loss symptoms. Usually, the reasons for staying up late include mental stress, disturbance of work and rest, insomnia and other factors related. If you stay up late once in a while, the symptoms of hair loss usually do not occur after paying attention to rest. But if it is repeatedly stay up late, can lead to the body endocrine function mediation disorder, sebaceous gland secretion abnormal, followed by seborrheic dermatitis, that is, hair oil more serious, will also lead to the occurrence of hair loss. In addition, repeatedly staying up late can also lead to a decrease in body resistance, which then causes a fungal infection of the scalp, known as tinea capitis, which can also lead to hair loss. Therefore, it is recommended that patients develop a good work and sleep schedule, taking into account their work and family, to ensure 7-9 hours of sleep daily. Patients with severe insomnia can also visit a hospital psychiatric department for related treatment.