A retrospective study is a case-control study that seeks to retrospectively identify the success of a treatment or the influence of factors that may cause or maintain a disease.
A variety of different rheumatic diseases are summarized within the term rheumatism. A distinction is made between inflammatory and degenerative rheumatic diseases.
The most common inflammatory form of rheumatism is rheumatoid arthritis in which the immune system wrongly attacks its own junctions.
The most common inflammatory disease of the joints. The causes of the disease are still largely unclear. Presumably, genetic factors play a role, because the risk of disease is higher if rheumatism is present in the family. In addition, various environmental factors are possible triggers, such as infections and allergies.