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Clinical efficacy of psoralen + sunlight vs. combination of isotretinoin and psoralen + sunlight for the treatment of chronic plaque‐type psoriasis vulgaris: a randomized hospital‐based study

Isotretinoin has been used in combination with oral psoralen + UVA (PUVA) and narrowband UVB (NBUVB) for treating psoriasis, especially in women of child‐bearing age. The efficacy of oral psoralen + sun exposure (PUVAsol) is comparable to that of PUVA. This study was planned to compare the efficacy of oral PUVAsol with that of the combination of oral isotretinoin and PUVAsol in patients with chronic plaque psoriasis.