Phototherapy for Psoriasis | 合法醫療器材資訊網

Phototherapyinvolvesexposingtheskintoultravioletlightonaregularbasisandundermedicalsupervision.Treatmentscanbedoneinahealthcareprovider's ...

Ultraviolet light A (UVA) is relatively ineffective for psoriasis unless it’s used with light-sensitizing agents called psoralens. This process, called PUVA, slows down excessive skin cell growth and can clear psoriasis symptoms for varying periods of time. There are three administration routes for PUVA: topically as a cream, mixed in with bathwater, or ingested orally. Stable plaque psoriasis, guttate psoriasis, and psoriasis of the palms and soles are most responsive to PUVA treatment.

Sunlight: Although both UVB and UVA are found in sunlight, UVB works best for psoriasis. UVB from the sun works the same way as UVB in phototherapy treatments.

However, using sunlight to treat psoriasis is not recommended for everyone. Sunlight is not as effective for the treatment of psoriasis as prescription phototherapy. Talk with your health care provider to fi...