Topical calcipotriol combined with urea 20% versus intralesional injection of triamcinolone acetonide, 5-fluorouracil, and methotrexate in the treatment of nail psoriasis: A comparative study.

There is no consistently effective treatment for psoriatic nails. Topical and intralesional modalities have been recently investigated and showed promising efficacy and safety. To compare the efficacy and safety of intralesional injection of 5-fluorouracil (5-FU), methotrexate (MTX), triamcinolone acetonide (TA) versus topical calcipotriol plus urea 20% in the treatment of nail psoriasis. This study included 60 patients with nail psoriasis who were randomly assigned to 4 groups, each containing 15 patients. The first 3 groups received intralesional injection of 0.1 ml of 5-FU (group A), MTX (group B), and TA (group C) into the nail matrix and bed monthly for 3 months. Group D received a topical combination of calcipotriol/urea 20% twice daily for 3 months. Therapeutic response was assessed every month for 3 months using the target nail psoriasis severity index (NAPSI). The mean percentage of improvement was significantly higher in topical calcipotriol/urea combination (57.1 ± 26.4) than intralesional TA (44.2 ± 32.7), intralesional MTX (37.7 ± 14.2), and intralesional 5-FU (29.6 ± 14). Adverse effects were mild and insignificant in the studied groups. Topical calcipotriol/urea combination seems to be more effective and safe than intralesional injections of 5-FU, MTX, and TA.