A 21-year-old member asked:
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how effective is phototherapy in treating psoriasis?

2 doctor answers
Dr. Morris Westfried
45 years experience Dermatology
Varies: In stable plaque psoriasis phototherapy can flatten psoriasis and put into remission for about 9 months. It will require a series of 20-30 treatments. Home narrow band uvb devices are available for home use and can be covered by insurance but will require documentation by a dermatologist.
Answered on Oct 3, 2011
Dr. Arlo Miller
14 years experience Dermatology
Very: Most psoriasis patients respond very well to phototherapy. If you get better with sunlight, it is very likely that phototherapy will lead to substantial improvement. Phototherapy is my favorite treatment when psoriasis can't be controlled with topical medicines.
Answered on Feb 10, 2013

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May be: It might be effective. The intensity of the light may change over time and this would decrease the effectiveness.
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No: The UVB doesn't penetrate deeply so it shouldn't be any problem.
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