[The importance of history-taking in the diagnosis of inflammatory-rheumatic disease: a prospective study of 100 patients (author's transl)].

In a prospective study of 100 inpatients, "history-taking diagnosis" was analysed in terms of proven probability sequence, on the basis of an extensive history-taking plan. The most likely diagnosis, as obtained by history-taking, was the same as that in the final discharge letter in 72% of cases. In only 5% did new investigations establish a diagnosis not made by history-taking. Physical examination, radiological and laboratory tests, in some cases also special investigations such as renal biopsy, proved of importance, in the first instance in establishing the diagnosis (adding to or confirming diagnostic criteria) and the choice of diagnosis (exclusion diagnosis). It is a prerequisite for a high percentage of correct diagnoses by history-taking that the examining doctor is familiar with the clinical picture of rheumatic diseases, including their epidemiology, age and sex distribution, organ involvement and pattern of joint involvement, and takes time in obtaining a good history.