A double-blind controlled study demonstrated that 0.5% triamcinolone acetonide in flexible collodion is effective in the topical treatment of psoriasis. The findings were subjected to a system of sequential analysis which showed them to be statistically significant at the 5% level.
CULLEN SI. Psoriasis Treated With Triamcinolone Acetonide In Flexible Collodion. Arch Dermatol. 1964;89(3):387–390. doi:10.1001/archderm.1964.01590270073016
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