Men in their 50s with long white hair on their pubic area may be associated with vitiligo, albinism, micronutrient deficiencies, and aging. 1. Vitiligo: it is an acquired pigmentation deficiency disease, which is mainly manifested in the clinic as white spots on the surface of the skin, and the hairs in the center of the white spots can be shown to be white. 2. albino: is due to tyrosinase deficiency or its function is reduced and produce a kind of white spot disease, and melanin synthesis disorder and lack of related, in addition to the manifestation of the pubic white hair, the skin, eyebrow hair may also show for white. 3. Micronutrient deficiency: it refers to the lack of micronutrients in the organism which affects the color of the hair and the growth rate of the hair. 4. Aging: People who enter the aging period in advance will have a gradual decrease in melanin cells in their bodies, so they are prone to white hair or white hair phenomenon. Due to the complexity of the cause of the disease, the specific circumstances need to ask the doctor for a face-to-face consultation.