The results of NB-UVB home light therapy are not immediate; in the early stages of treatment, it may feel "ineffective" or "too slow"; in fact, it's usually not ineffective, it's just that it's not the right time, and it's not because you haven't done it right.

　　Treatment for a long period of time still do not see the effect, will make the patient lose confidence and patience, give up the treatment or arbitrarily increase the dose and frequency of treatment. This situation should be carefully analysed to find out the reasons, correctly judged and appropriately disposed of.

　　The patient said "no effect", in fact, most of the cases is because the number of times the light is not enough, the cumulative dose is not enough. Usually, vitiligo needs 3 months of treatment to see better results, psoriasis treatment about 20 times to see a more significant improvement, so can not be too anxious. Generally speaking, 3 times a week will work faster than 2 times a week, which can shorten the treatment period.

　　In addition, ultraviolet phototherapy exists light adaptation phenomenon. Some vitiligo patients in the acceptance of phototherapy to reach a certain number of treatments, even if the continued treatment, the white spot pigment recovery is no longer increased, suggesting that the plateau period. If you enter the plateau period, it is recommended to suspend phototherapy for 3 ~ 6 months, when the skin to restore the initial treatment of photosensitivity, and then restart treatment.

　　Sometimes, although the changes are not obvious to the naked eye, significant histological improvement has occurred. It is recommended that patients with vitiligo have their pigment recovery verified by a professional using a variety of methods, such as Wood's lamp, dermoscopy, and skin CT, when they have had about 30 consecutive phototherapy sessions. Before deciding that continuous phototherapy is "ineffective", at least 30 times of phototherapy should be completed, and some of them can be extended to about 40 times. If there is no response at all, it means that the patient is not sensitive to the phototherapy, and the phototherapy can be stopped.

　　Due to differences in sensitivity to ultraviolet light in individuals and various parts of the body, the effect of phototherapy is often different, but it is rare to find people who are truly difficult to treat, insensitive or resistant to ultraviolet light. If NB-UVB phototherapy treatment of vitiligo, opposite, neck, trunk lesions good effect; common type is better than segmental type; joint parts, lips, finger ends, ankles, palms and metatarsals and nipples white spot effect is poor; phototherapy combined with other therapies is not only better than a single phototherapy, but also shorten the treatment cycle, reduce the possible adverse reactions. It is also suitable for skin lesions that are ineffective for single therapy.

　　There are also some patients because of the phototherapy instrument lamp energy attenuation, resulting in insufficient irradiation dose. In addition, some patients are illuminated after applying topical creams, which they thought would enhance the effect of the topical medication, but the topical creams blocked or absorbed the ultraviolet energy, resulting in an insufficient dose of phototherapy. Therefore, the equipment should be calibrated regularly and a bath should be taken before illumination to facilitate the absorption of light energy by the tissues.

　　Founded in 1992, Shanghai Sigma High-Tech Co., Ltd. is a medical instrument company specialising in the research, development and production of phototherapy products in China. Over the past twenty years, the company, in line with the "development of photomedicine technology, for the service of human health" purpose, will be effective photomedicine method through the technical transformation into medical products, strictly follow the requirements of medical equipment must be safe, reliable, effective, and established a high standard of production quality management system.

　　Ltd. has developed several series of professional phototherapy products for hospitals, such as full-compartment, half-compartment and partial-compartment products, as well as photomedical diagnostic products such as daylight ultraviolet simulation devices and Wood's lamps, which are able to satisfy the needs of dermatology departments of hospitals for multi-disease and multi-level phototherapy. At the same time, Sigma was the first to develop a portable phototherapy instrument SS-01 for home use in China, which was approved and registered by the Drug Administration, and is still the best-selling classic home use phototherapy product in the domestic market. The SH series of new products developed on this basis has further enriched the product line of home phototherapy, enabling patients to have more and more suitable choices according to their symptoms and diagnosis and treatment conditions.

　　Telephone: 021-64325721, mobile phone number: 18217304120

　　Address: 11/F, Building 8, No.388 Shuanglian Road, Xujing Town, Qingpu District, Shanghai, China

　　Purchase link: Official Flagship Store

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