What is the reason for growing white hair

People have a lot of sweat hair on their bodies, and the color of sweat hair is generally black. It grows fast and is difficult to control. The speed at which the sweat hair grows on people's bodies is also different. This mainly depends on the person's physical fitness. People with high hormone secretion generally have very fast growing sweat hair. Some people find that they have white hair growing on their bodies. So, what is the reason for growing white hair?

It is normal for normal people to occasionally grow one or two white hairs, just like some young people occasionally find a few white hairs among their black hair. Sweat hair is generally black, but sometimes white hair may appear due to poor development or malnutrition. Don't worry too much, just observe it first, there shouldn't be any big problems. If you have other discomforts, you should seek medical attention in time.

In this case, it is just a change in hair, which has no effect on your health, so there is no need to worry. If it does not cause any discomfort, it can be completely ignored and will not cause other diseases. If you think it looks ugly on your face, you can just cut it off with scissors.

Common causes of whitening of sweat hair include nutritional and mental factors, systemic diseases and some albinism. The pathogenesis is related to the lack of melanin in the skin. If there is local inflammation, it is recommended to follow the doctor's advice and take active anti-inflammatory treatment. If there are local skin changes, pay attention to the possibility of vitiligo.

In addition, pay attention to relaxing your mind and eating a light diet. It will get better after a period of time. The tyrosinase activity of the pigment cells of the hair follicles gradually weakens, and the pigment of the hair shaft gradually decreases, so white hair appears. If observed under an electron microscope, it can be seen that there are very few pigment cells in the hair papilla and hair shaft. "The hair of old people slowly turns white." In terms of occurrence and development, white hair mostly starts on the two temporal sides and temples of the head, gradually develops, and it takes several years or more to develop to the entire head.