[Treatment of psoriasis with dichlorodiethyl sulfide].

A report is given of the use of dichlorodiethyl-sulfide (ypérite) in ointment form in a concentration of 1: 20,000 in the treatment of psoriasis. The effect of the treatment was followed in 59 patients. Healing or marked improvement occurred in 44. In in-patients the average duration of treatment was 16 days and in out-patients 48 days. When compared with other methods of treatment the method of application is very simple and its effect rapid. So that with a shorter average duration of treatment a higher percentage of patients is healed.