[Gastrointestinal disorders in psoriatic arthritis].

Systemic amyloidosis is a rare complication in psoriatic arthritis, 16 cases only were published until now. Our case report is characteristic of gastrointestinal symptoms like chronic diarrhea, malabsorption, and intestinal pseudoobstruction. In addition, in this connection the first report of segmental pseudomembranous enteritis is given. Discussing the findings, observations and literature, the difference between psoriatic enteropathy, malabsorption in systemic amyloidosis and pseudomembranous enteritis in amyloidosis is shown. In this connection the basic different pathophysiological mechanisms are demonstrated.