Dystrophy of fingernails due to psoriasis or lichen planus is a constant embarrassment to patients so affected, especially if their occupation involves meeting members of the public. The treatment for these conditions until the present has been unsatisfactory1 and any reasonable method of therapy which offers hope of success merits investigation.
Since the advent of triamcinolone, attention has been drawn to the favorable effect of this steroid on psoriasis, both by systemic administration2 and by injection directly in the lesion.3 In a personal communication, Weiner4 has mentioned the beneficial results which he has obtained in the treatment of psoriasis of the nails by injection of triamcinolone acetonide suspension directly into the matrix of the involved nail. He found that growth of healthy nail appeared within several weeks, and improvement persisted for as long as the period of observation (up to one year) in some cases.
GERSTEIN W. Psoriasis and Lichen Planus of Nails: Treatment with Triamcinolone. Arch Dermatol. 1962;86(4):419–421. doi:10.1001/archderm.1962.01590100033009
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