You also do not need to take additional drugs in order for the light to absorb and impact your psoriasis which has shown to have among the riskiest side effects.
Uvb light therapy for psoriasis.
Uvb from the sun works the same way as uvb in phototherapy treatments.
For people with more advanced psoriasis another form of light therapy combines ultraviolet a uva with a psoralen drug.
Overall with uvb light therapy there are fewer risks to the body because it does not penetrate as deeply and the time exposed to the light is lesser.
Although both uvb and uva are found in sunlight uvb works best for psoriasis.
Phototherapy or treating your skin with specific kinds of uv or laser light can help with psoriasis eczema and atopic dermatitis.
Uvb phototherapy is used to treat moderate to severe psoriasis.
Stable plaque psoriasis guttate psoriasis and psoriasis of the palms and soles are most responsive to puva treatment.