Phototherapy or light therapy, involves exposing the skin to ultraviolet light on a regular basis and under medical supervision. Psoriais phototherapy treatments are done in a doctor’s office or psoriasis clinic or at home with phototherapy unit. The key to success with light therapy is consistency.
National Psoriasis Foundation does not support the use of indoor tanning beds as a substitute for Psoriais phototherapy performed with a prescription and under a doctor’s supervision. Indoor tanning raises the risk of melanoma by 59 percent, according to the American Academy of Dermatology and the World Health Organization, and does not provide the type of light that most effectively treats psoriasis.
Types of Phototherapy
Present in natural sunlight, ultraviolet B (UVB) is an effective Psoriais phototherapy. UVB penetrates the skin and slows the growth of affected skin cells. Treatment involves exposing the skin to an artificial UVB light source for a set length of time on a regular schedule. This treatment is administered in a medical setting or at home.There are two types of UVB treatment, broad band and narrow band. The major difference between them is that narrow band UVB light bulbs release a smaller range of ultraviolet light. Narrow-band UVB is similar to broad-band UVB in many ways. Several studies indicate that narrow-band UVB clears psoriasis faster and produces longer remissions than broad-band UVB. It also may be effective with fewer treatments per week than broad-band UVB.