May 15 (HealthDay News) -- PhotoMedex's XTRAC Velocity Laser has been approved by the U.S. Food and Drug Administration to treat psoriasis and other skin disorders, including vitiligo, atopic dermatitis and leukoderma, the company said Thursday.

The new system delivers higher UV power and is up to three times faster than its predecessor, PhotoMedex said in a statement.

Psoriasis is the second most common U.S. skin disorder, the company said, citing the National Psoriasis Foundation. The disorder affects more than 7 million Americans, and as many as 260,000 cases are diagnosed each year.