In 1981 two foreigners (Parrish and Jaenike) study found that UV treatment of psoriasis 311 nm to 313 nm wavelength (psoriasis), vitiligo, c
In 1981 two foreigners (Parrish and Jaenike) study found that UV treatment of psoriasis 311 nm to 313 nm wavelength (psoriasis), vitiligo, curative effect is better than that of ordinary ultraviolet, and psoralen ultraviolet, and fast acting, small side effect.
Subsequently, the ultraviolet radiation from 311 nm to 313 nm was studied, and the mechanism of action was improved.
For the first time, the initial dose was determined according to the patient's skin type and treatment experience, and three times a week. According to the response of the patient after irradiation, ten percent to twenty. In the course of treatment, if mild erythema, no dosage; moderate erythema, by the previous dose of ten percent to twenty; appear painful erythema or blisters, treatment should be suspended, and the corresponding treatment.
When the patient's skin lesions subsided more than ninety percent, to extend the treatment of intermittent period and into maintenance therapy, generally take three months or longer.
Indications: mainly for psoriasis (psoriasis), vitiligo and the treatment of atopic dermatitis, also can be used for subcorneal pustular disease, mycosis fungoides, acute and chronic graft-versus-host disease, granuloma annulare, herpes zoster, palmoplantar pustulosis, pityriasis rubra pilaris, urticaria pigmentosa etc..
Compared with the ordinary ultraviolet, without the use of photosensitizer in the course of treatment, no adverse reaction caused by photosensitizer after treatment, no special protection for the eyes. It is safe for pregnant women and children, and there are no reports of cancer.