Psoriasis provoked by beta-blocking agents.

23 patients suffering from psoriasis and being treated with beta-blocking agents were compared to a control group regarding psoriasis activity. Seven out of the 23 were affected by psoriasis after introduction of the beta-blocking drug. The mean age of onset was significantly higher (p less than 0.001) than that of the control group, which supports the provoking effects of beta-blocking agents. Remission occurred in 3 out of 4 patients after medication was stopped.