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  • Title: Efficacy of the pulsed dye laser in the treatment of localized recalcitrant plaque psoriasis: a comparative study.
    Author: Erceg A, Bovenschen HJ, van de Kerkhof PC, Seyger MM.
    Journal: Br J Dermatol; 2006 Jul; 155(1):110-4. PubMed ID: 16792761.
    Abstract:
    BACKGROUND: Localized chronic plaque psoriasis, resistant to local therapy, may be very hard to treat. The treatment of these lesions with a pulsed dye laser (PDL) has been described before, but a comparative study between the PDL and a potent topical treatment has never been performed. OBJECTIVES: To compare the efficacy of the PDL in the treatment of localized, recalcitrant plaque psoriasis with a potent topical therapy, using calcipotriol/betamethasone dipropionate (Dovobet) as an active comparator. METHODS: Eight patients with psoriasis were treated with both PDL (585 nm) and calcipotriol/betamethasone dipropionate in an open, intrapatient, left-right comparison. A plaque severity score (sum score) and photographs were used to document the course of therapy. Patients reported pain on a visual analogue scale. RESULTS: Both treatments were well tolerated, although one patient left the study due to post-PDL treatment pain. A significant difference in the sum score 12 weeks after treatment was seen in favour of the PDL (62% vs. 19% reduction; P<0.05). Scores for erythema declined significantly at week 12 in both the PDL and the calcipotriol/betamethasone dipropionate group (P<0.001). Induration and desquamation scores were significantly reduced at week 12 in the PDL group, without a statistically significant reduction in calcipotriol/betamethasone-treated lesions. The pain scores declined with progressive PDL treatments, although not statistically significantly. CONCLUSIONS: PDL treatment might be considered for the treatment of localized, recalcitrant plaque psoriasis, when other topical therapies have failed.
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