What is the disease of completely white hair and eyebrows?

Normal people's hair and eyebrows are the same color. If the hair and eyebrows are completely white, it means that the melanin in the hair has decreased. As the human body ages, the body's skills will slowly age. At this time, the hair and eyebrows will turn white. However, some young people have completely white hair and eyebrows, which is very abnormal. So what disease is completely white hair and eyebrows?

First, what disease is it when the hair and eyebrows are completely white? This is called albinism. Albinism is a hereditary white spot disease caused by a lack or synthesis disorder of melanin in the skin and appendages due to tyrosinase deficiency or dysfunction. The patient has no retinal pigment, the iris and pupil are light pink, and is afraid of light. The skin, eyebrows, hair and other body hair are white or yellowish white. Albinism is a familial hereditary disease, which is inherited as an autosomal recessive trait and often occurs among people who marry close relatives. Genetic map of albinism: Both parents of the patient carry the albinism gene, but the patient himself does not develop the disease. If both husband and wife pass the disease-causing genes they carry to their children, their children will become sick. Ocular albinism is an X-linked recessive trait. The disease only occurs when the albinism gene carried by the mother is passed on to her son, but not to her daughter.

Second, albinism is a genetic disease in which the skin and its appendages lack pigment. It can be divided into systemic albinism and local albinism, with the former being the most common. The patient's skin is white, and the hair is silvery white or light yellow; the iris is light red or light gray, translucent, the pupil is light red, the retina has no pigment, and the patient is photophobic, with nystagmus and decreased vision; the patient is very sensitive to sunlight, and after sun exposure, the skin may thicken and squamous cell carcinoma may occur. The onset of albinism is due to melanin metabolism disorders. Melanin in a normal human body is synthesized by melanocytes, which contain melanosomes, which contain tyrosinase, an enzyme that can convert tyrosine into melanin. The number of melanocytes in albinism patients is normal, and there are melanosomes in the cells, but because the gene that controls tyrosinase mutates and cannot synthesize tyrosinase, tyrosinase is deficient in melanosomes, and tyrosine cannot be converted into melanin, resulting in whitening of the skin, mucous membranes, hair, eyes, etc.

What disease causes completely white hair and eyebrows? The cause of gray hair is mainly closely related to the human kidneys. A person who is overworked, has irregular work and rest schedules, and has irregular diet may also cause gray hair. Therefore, if you want to treat gray hair as soon as possible, patients with gray hair should pay more attention to rest, pay attention to their diet, eat more foods that are helpful for treating gray hair, and also eat some kidney-tonifying supplements.