Excimer UV Light System

Excimer light treatment is a development of whole-body narrowband UVB. Narrowband UVB delivers energy at a wavelength between 311–312 nm for the treatment of localized psoriasis and vitiligo. The disadvantages of narrowband UVB include irradiation of the whole body (even if the psoriasis is localized) and the need for a high number of treatments (usually between 15 and 40 sessions). The UV ray generated by the excimer light is delivered via a hand-held wand that focuses on the lesion. Compared with narrowband UVB, its advantages are: Healthy skin surrounding the affected areas is not exposed to radiation Different templates are used according to the area to be treated A higher dose of radiation can be delivered, with a reduced cumulative dose of irradiation In some cases, a shorter course of treatment is effective It can be used in areas difficult to reach with conventional phototherapies, such as ears and genitals It can be used in children, as it is a relatively friendly–looking piece of equipment.