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 analyzed 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 per week will work faster than 2 times per 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 pigmentation recovery no longer increase, 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 histologic 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 judging the continuous phototherapy as "ineffective", at least about 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 it is not sensitive to 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. Such as NB-UVB phototherapy treatment of vitiligo, opposite, neck, trunk lesions effect is good; common type is better than segmental type; joint parts, lips, finger ends, ankles, palms and metatarsals and nipples white spots 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 the phototherapy instrument lamp energy attenuation, resulting in insufficient irradiation dose. In addition, some patients are illuminated after applying topical ointment, which they thought would enhance the effect of the topical medication, but the topical ointment 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.

　　Shanghai Sigma Hi-Tech Co., Ltd. was founded in 1992, is a domestic medical instrument company specializing in the research, development and production of phototherapy products. 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 technology into medical products, strictly follow the requirements of medical equipment must be safe, reliable, effective, and establish a high standard of production quality management system.

　　Ltd. has developed many 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 department of hospitals for multi-disease and multi-level phototherapy. At the same time, Sigma firstly developed the portable phototherapy instrument SS-01 for home use in China and passed the approval of registration by the Drug Administration, which is still the best-selling classic home use phototherapy product in the domestic market. The SH series of new products developed on this basis further enriches the product line of home phototherapy, enabling patients to have more and more suitable choices according to their own symptoms and diagnosis and treatment conditions.

　　Tel：021-64325721，Mobile：18217304120

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

　　Purchase Link: Official Flagship Store

　　Website of Shanghai Sigma Hi-Tech Co: