ABSTRACT
BACKGROUND: Vitamin D analogues and NBUVB phototherapy are both well-established modalities of treatment in psoriasis. The objective of this open label, intraindividual, left right study was to compare two different vitamin D analogues, calcipotriol and tacalcitol, in combination with NBUVB phototherapy in chronic stable plaque psoriasis. METHODS: Thirty patients with stable plaque psoriasis were enrolled for a 12-week clinical trial. The target lesion on left side was treated topically with tacalcitol ointment once daily, while that on the right side was treated with calcipotriol ointment twice daily. NBUVB phototherapy was given thrice weekly. Efficacy was assessed by target plaque scoring. RESULTS: Both therapies resulted in statistically significant reduction in erythema, scaling, thickness and target plaque score, seen as early as 2 weeks into therapy. However, calcipotriol combination led to an earlier clearance of plaques and a lesser relapse rate than tacalcitol combination. The number of treatment sessions and cumulative NBUVB doses were significantly lower in the calcipotriol-treated group. CONCLUSION: Both vitamin D analogues appear to be safe, effective and cosmetically acceptable, calcipotriol being more efficacious, well tolerated with a rapid onset of action and a better maintenance of response.
