Severe cases of psoriasis and psoriasis arthritis require systemic treatmen
t. Although a number of established drugs are in clinical use, there is a n
eed for new compounds with an improved risk-benefit ratio with a major emph
asis on long-term safety. Furthermore, patients with moderate psoriasis ask
for systemic drugs to make therapy easier and to avoid excessive local tre
atments.
This article aims to give a brief overview about new drugs or groups of com
pounds together with an evaluation of their present status in the treatment
of psoriasis and their future role with particular respect to efficacy, to
lerability, safety and usability.