Lasers offer a unique treatment option called “targeted phototherapy.” This means that the light from the laser can target the psoriasis and not touch the surrounding skin.
Because the light treats only the psoriasis, a strong dose of light can be used. This strong dose can penetrate deeper into the psoriasis. This offers many people an effective way to treat a stubborn patch of psoriasis, such as can develop on the scalp, feet or hands.
This type of phototherapy requires fewer treatment sessions than other types of phototherapy. If the psoriasis responds to laser treatment, between 4 and 10 treatment sessions typically clear the targeted psoriasis. This will vary with the type of laser and the psoriasis.