Treatments – Phototherapy
Phototherapy uses natural and artificial light to treat psoriasis. Artificial light therapy can be given in hospitals and some specialist centres, usually under the care of a dermatologist. These treatments are not the same as using a sunbed.
Ultraviolet B (UVB) phototherapy uses a wavelength of light invisible to human eyes. The light slows down the production of skin cells and is an effective treatment for some types of psoriasis that have not responded to topical treatment. Each session only takes a few minutes but you may need to go to hospital two or three times a week for six to eight weeks.
Psoralen plus ultraviolet A (PUVA)
For this treatment, you will first be given a tablet containing compounds called psoralens, or psoralen may be applied directly to the skin. This makes your skin more sensitive to light. Your skin is then exposed to a wavelength of light called ultraviolet A (UVA). This light penetrates your skin more deeply than ultraviolet B light.
This treatment may be used if you have severe psoriasis that has not responded to other treatment. Side effects of the treatment include nausea, headaches, burning and itchiness. You may need to wear special glasses for 24 hours after taking the tablet to prevent the development of cataracts. Long-term use of this treatment is not encouraged as it can increase your risk of developing skin cancer.
Combination light therapy
Combining phototherapy with other treatments often increases its effectiveness. Some doctors use UVB phototherapy in combination with coal tar, as the coal tar makes the skin more receptive to light. Combining UVB phototherapy with dithranol cream may also be effective (this is known as Ingram treatment).
What to expect from you treatments ?
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