The two sides of the long white hair may and age, mental stress and other physiological factors, but also may be vitiligo, albino disease and other diseases lead to. 1. physiological factors: age and mental stress and other physiological factors may lead to the two sides of the long white hair, is a normal phenomenon. 2. vitiligo: its causes and melanocyte destruction, genetic and autoimmune system diseases and other factors related to the main manifestation of white spots, can be on the face, neck and back of the hands and other places, head and face vitiligo common white hair. 3. albinism: its cause may be related to melanin production abnormalities, heredity and other factors, the patient will appear hair changes, such as white, yellow, brown, etc., may also appear eye hypopigmentation, photophobia and other symptoms. There are many reasons that lead to gray hair on both sides, after excluding physiological factors, it is recommended that patients seek medical examination to clarify the cause of the disease and follow the doctor’s instructions for treatment.