Teenagers grow gray hair, consider and mental nerve factors, genetic factors, bad habits, pathological factors related. It is recommended to pay attention to nutritional supplements, relieve stress, and give medication to regulate when necessary. 1. Psycho-neurological factors: long-term mental tension, bad mood, anxiety, worry, insomnia, shock, may lead to premature appearance of gray hair on the head. 2. Hereditary factors: some patients have a family history of gray hair, teenagers on the emergence of white hair and genetic considerations, genetics caused by gray hair is generally no special treatment. 3. Bad habits: irrational diet, resulting in the follicle melanin cell synthesis obstacles, causing gray hair. It is recommended to have a regular work and rest schedule, get enough sleep, relieve stress, take proper exercise and adjust your mindset. Pay attention to nutritional supplements, give a variety of fresh vegetables, fruits, coarse grains, fish and shrimp, etc., can promote hair black. 4. Pathological factors: Teenagers with white hair also need to know whether it is related to pathological factors, such as vitiligo, baldness, progeria, hyperthyroidism and so on, which may also lead to white hair. It is recommended to go to the hospital, combined with the doctor’s advice for primary disease treatment. If abnormal gray hair occurs, you can first go to the hospital dermatology department. If the gray hair is caused by hyperthyroidism, it is recommended to go to the endocrinology department of the hospital. If the gray hair is caused by cardiovascular disease, you can go to the hospital cardiology, vascular surgery for examination.