Excimer lasers, which deliver ultraviolet light to localized areas of the skin. This treatment uses intense, focused doses of laser light to help control areas of mild to moderate psoriasis without harming healthy skin around them.
Targeted laser therapy is similar in effectiveness to traditional light therapy, but it works in fewer sessions with stronger doses of light that can reach deeper into the affected skin. The handheld laser wands are also good for reaching psoriasis in hard-to-treat areas, such as the elbows, knees, palms of the hands, soles of the feet, and scalp.
Excimer laser treatments are performed in the dermatologist’s office. Each session takes only a few minutes. During the treatment, the doctor aims the laser directly at patches of psoriasis. You might feel some warmth at the site or a snapping sensation against the skin.
Excimer lasers aim a high intensity ultraviolet B (UVB) light dose of a very specific wavelength — 308 nanometers — directly at the psoriasis plaques. Because the laser light never touches the surrounding skin, it reduces the risk of UV radiation exposure. Excimer lasers are used to treat mild-to-moderate psoriasis.
With excimer laser therapy, patients usually have 2 sessions a week for 4 to 10 sessions to get results.
Your doctor will determine your dose of laser light based on the thickness of your psoriasis plaques and your skin color (a lower dose is used on lighter skin). During the procedure, you will be given dark goggles to protect your eyes.