Twenty-something long white hair may be excessive fatigue, stress and other physiological factors caused, but also may be teenage white onset, vitiligo, albinism and other diseases caused. 1. Physiological factors: If you stay up late for a long time and get overly tired, or if you are under too much pressure or mental tension for a long time, you may experience gray hair in your twenties. 2. Teenage gray hair: the cause may be related to heredity, malnutrition, systemic diseases and other factors. The main symptom is that the hair becomes white, may also appear irritable, dizziness, vision loss and other phenomena. 3. Vitiligo: the cause of the disease is not clear, may be related to immune system disorders, genetic factors. The patient’s skin will appear a varying number of white patches of different sizes, round, linear or irregular, etc., head and face vitiligo may lead to long white hair. 4. albinism: the cause of the disease is mainly related to genetic factors, the patient will appear photophobia, low vision, hair melanin reduction and other symptoms, if you suffer from albinism, may lead to twenty-something long white hair. There are more reasons for gray hair in the twenties, and after excluding physiological factors, it is recommended to go to a regular hospital to clarify the cause of the disease and receive treatment as soon as possible.