A review of the 308-nm excimer laser in the treatment of psoriasis.

The 308-nm excimer laser is a new modality for the treatment of psoriasis. With the 308-nm UVB radiation generated by this laser, it is possible to clear psoriasis with as little as one treatment and to have a moderately long remission. In contrast to traditional phototherapy techniques, this handheld excimer laser UVB therapy is selectively directed toward lesional skin, thus sparing the surrounding normal skin from unnecessary radiation exposure. This modality may offer a new alternative in the treatment of limited psoriasis and other inflammatory diseases.