XTRAC treatment for psoriasis is safe for children, including those just a few years of age, according to PhotoMedex. XTRAC uses laser light beamed through a liquid light system to focus on active psoriasis skin lesions. The concentrated ultraviolet light clears the lesions quickly without damaging healthy skin.
Excimer laser therapy such as XTRAC uses stronger light doses, reaches deeper into diseased skin, and takes fewer sessions to be effective than traditional light therapy does, explains WebMD. As of 2015, physicians use handheld laser wands to administer the therapy, which makes it easier for them to treat psoriasis on the knees, elbows, scalp, bottom of the feet and palms of the hands. Physicians use excimer laser therapy for treating mild to moderate cases of psoriasis.