Narrowband UVB phototherapy for psoriasis: results with fixed increments by skin type (as opposed to percentage increments)
Photodermatol Photoimmunol & Photomed. 2009. doi:10.1111/j.1600-0781.1999.tb00061.x
Utilizing a conservative fixed increment regimen, in comparison to percentage increments, allows a successful clearing of the area affected with psoriasis. In addition, the risk of serious erythema due to light exposure is greatly reduced. It was also determined in this article that compared to traditional broad band phototherapy, narrow band phototherapy leads to increased and earlier clinical improvement; therefore, there is an increase in patient compliance with undergoing treatment sessions and a decrease in patient drop-out rates.