[Gamma interferon in psoriatic arthritis].

Fifteen patients with confirmed psoriatic arthritis were treated with recombinant interferon-gamma (IFN-gamma) between October 1985 and February 1986. In ten patients a marked relief of joint pain was achieved within 28 days. Daily doses of less than 200 micrograms IFN-gamma did not have any effect on the skin lesions. Tolerance of the drug, given subcutaneously, was dose-dependent, no side-effects occurred with dosages of less than 100 micrograms/d.