[Experiences in half-side treatment with tar additive to cignolin-salicylic-acid-white-vaseline therapy of psoriasis vulgaris].

As shown in bilateral comparison studies addition of crude coal tar (T) to standard antipsoriatic therapy with dithranol and salicylic acid in white petrolatum (CVS) diminished the dithranol-irritation; consequently, accelerated application of increasing dithranol-concentrations shortened the duration of TCSV -therapy.