[Update in treatment of psoriatic arthritis].

Psoriatic arthritis is a chronic rheumatic disease making part of spondylarthropathies. It is the most frequent chronic inflammatory rheumatism after rheumatoid arthritis. Eventhough, it is usually a benign affection, it may be destructive leading to handicap. Several new medications have been introduced, including anti-tumor necrosis factor (TNF alpha blockers) and leflunomide for treatment of psoriatic arthritis. Many studies show the efficacy of these medications in this disease.