UVB

UVB stands for ultraviolet B light or middle wave ultraviolet light. Ultraviolet light has a slightly greater frequency than visible light. UVB has been used for over fifty years to treat a variety of skin disorders. The reason UVB improves many skin diseases is not known.
UVB light treatment is given 2-3 times per week for 12-15 weeks. After 15 weeks, maintenance therapy is often required once a week.

Side Effects: (%= percentage of patients receiving treatment)
1-2% Skin burn and blistering
4-8% Redness of the skin
100% Tan or darkening of the skin

Most of the side effects are temporary. People who have had UVB treatment may have an increased risk of skin cancer. UVB causes the skin to look older (photo aging). UVB can also cause white and brown spots to appear on the skin.
A typical UVB session consists of coming into the office, removing clothes from the affected body areas and standing in a five foot square by seven foot high light box. The lights are then turned on for 2-10 minutes. The length of each session is increased by a small amount over the previous session. One must wear protective goggles and groin protection (underwear or towel) while in the light box. The protective eye wear can be purchased from the office at a nominal charge.
Some patients just get UVB, with a hand held unit, to one body location. If you fall in this category some of the above will not apply.