A dimethoxynaphthalene derivative (RS-43179 gel) compared with 0.025% fluocinolone acetonide gel in the treatment of psoriasis.

Thirty patients were entered into a double-blind trial comparing a dimethoxynaphthalene derivative (RS-43179 gel) and fluocinolone acetonide (Synalar gel) in the treatment of psoriasis. The two preparations were applied three times daily for 4 weeks, and the patients were assessed at weeks 1, 2, 3, 4, 7 and 9. No significant differences between the two preparations could be detected. By the end of the 4-week treatment period, the number of patients showing a 'Good, Excellent or Clear' therapeutic response was 25 out of 28 after RS-43179 treatment and 26 out of 28 after Synalar treatment. Four patients experienced irritation on the side treated with RS-43179. In two of these patients the reaction was severe and the treatment was discontinued, but in the other two patients, the local irritation was only moderate. No other adverse reactions were seen.