BACKGROUND: Previous studies showed the efficacy of a formulation containing calcipotriol and betamethasone dipropionate for the treatment of psoriasis. OBJECTIVE: To investigate maintenance strategies of a formulation containing calcipotriol (50 µg/g) and betamethasone dipropionate (0.5 mg/g) for the treatment of scalp psoriasis. MATERIALS AND METHODS: Nine-hundred and four patients were screened and randomised on a 1:1 basis in two groups: maintenance of two applications per week (group A) versus on-demand therapy (group B). Clinical evaluation was performed at weeks 0, 2, 4, 8 and 12. RESULTS: Eight-hundred and eighty-five patients were randomised: 441 in group A and 444 in group B. From week 2, both groups showed a significant clinical improvement compared with baseline; at weeks 8 and 12, group A demonstrated a higher clinical response compared with group B (p < 0.05). This difference was statistically significant (OR 0.47, 95% CI 0.37, 0.60). CONCLUSIONS: The maintenance of twice-weekly application versus on-demand treatment of calcipotriol/betamethasone dipropionate gel is more effective and is associated with a lower rate of relapse.
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Saraceno et al. (2013) studied this question.
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