[Psychodynamic factors in some rheumatoid factor negative arthritic diseases (author's transl)].

A total of 32 patients with rheumatoid factor negative diseases were investigated by depth psychology: patients with palindromic rheumatism, Reiter's disease and psoriatic arthritis. In each case a typical psychosyndrome could be found correlative with the somatic syndrome, in which the specific form of working out of aggression was at the focal point. An association of psychic factors in the etiopathogenesis of these arthritic diseases is consequently very probable.