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Abstract
Background: Even though the traditional therapy for nail psoriasis has been used for decades, no randomized, controlled trial of such treatment has been conducted to date.
Objective: To evaluate the efficacy and safety of intralesional triamcinolone injections compared with 0.05% clobetasol ointment for psoriatic nails.
Materials and methods: Psoriasis patients, each with three fingernails with similar degrees of severity, were randomly recruited for intralesional triamcinolone injection group, 0.05% clobetasol ointment group, and a control group. The target Nail Psoriasis Severity Index (NAPSI) score of each finger was evaluated, any adverse effects were recorded, and photographs were taken.
Results: Forty-eight affected nails were analyzed. At the second month, a significantly greater reduction of the target NAPSI score was observed in the injection group compared to the control group (p = .003). There was a greatest reduction of the score in the following two month-period, which showed significant difference from the topical group (p = .003) and the control group (p = < .001). The score of the injection group, however, subsequently rose at the six-month visit so that there was no longer any statistically-significant difference between the three groups.
Conclusions: In spite of its temporary effect, the intralesional triamcinolone injection is an effective and safe treatment for psoriatic nails.
Acknowledgments
We are grateful Assistant Professor Dr. Chulalak Komoltri for her professional advice about medical statistics; Dr. John McFadden, DM, FRCP, St. John’s Institute of Dermatology, Guy’s Hospital, King’s College, London, UK, for providing an extended review.
Disclosure statement
No potential conflict of interest was reported by the authors.