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 10/3/2011
6.3k views
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 2/10/2013
5.3k views
2 doctors weighed in across 2 answers
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