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NB-UVB is the most advanced skin phototherapy method in the world. It uses a narrow-spectrum medium-wave ultraviolet light with a peak of 311 nm. It concentrates the most biologically active part of the ultraviolet light and directly acts on the affected part of the skin, while filtering out the bad band harmful to the skin. Ultraviolet light, small side effects, acting on the stratum corneum of the skin, short onset time, quick effect. It is the most commonly used method for treating vitiligo in foreign countries. The biological mechanism of NB-UVB treatment of vitiligo has the following aspects:

1. Stimulate the proliferation and migration of melanocytes. When melanocytes absorb UVB energy, they can stimulate the activity of tyrosinase, accelerate the oxidation and polymerization of tyrosine, and increase the synthesis of melanin.

2, can promote keratinocytes release melanocyte proliferation and differentiation factors such as endothelin-1, fibroblast growth factor, etc.;

3, UVB has an immunosuppressive effect, which can prevent migration and proliferation of melanocytes from damage. Mainly used for vitiligo treatment, but also for the treatment of psoriasis, atopic dermatitis, pityriasis rosea, eczema, alopecia areata, mycosis fungoides, neurodermatitis. NB-UVB irradiation treatment is divided into whole body irradiation and local irradiation, and the former or the latter depends on the type of the disease. At the same time, the irradiation process can be supplemented by other treatments, such as injection of Chinese and Western medicine preparations, oral, topical and epidermal transplantation. Vitiligo friends diet notes:

1. Eat more nuts (ginkgo, walnuts, peanuts, sunflower seeds, chestnuts, lotus seeds, pumpkin seeds, pine nuts, watermelon seeds, almonds), beans and soy products, black sesame seeds, animal liver and so on.

2. Absolutely fasting fish and shrimp seafood, no alcohol. It is not uncommon for the incidence, recurrence or aggravation of vitiligo caused by eating fish or drinking alcohol. Some patients are often unable to control their illness because they cannot strictly stop drinking or seafood.

3. Avoid excessive intake of vitamin C, do not eat or eat foods rich in vitamin C such as tomatoes, apples, oranges and so on.

4. Do not overeat spicy foods such as spicy food.

5. Children should change their partial eclipse habits. Vitiligo friends daily health care attention: Vitiligo should be based on treatment, supplemented by health care. In addition to dietary attention, you can also take appropriate health care, mainly to improve immunity and intake of more trace elements, but remember, health care products are not drugs, can not treat vitiligo. Therefore, Baekje Xinte nurses can consider health products such as Ganoderma lucidum, Ejiao, Spirulina and other health products in the case of economic approval. For trace elements, products containing iron, zinc, calcium, etc., such as iron and zinc, can be considered. Calcium chewable tablets