Clinical Study of Patients with Fever and Fever of Unknown Origin

ABSTRACT

BACKGROUND: Family physicians in their on primary practice frequently encounters patients with fever, welch is one of the common symptoms. Fever is an important symptom and can occur in mild disease, common cold, influenza, acute pharyngotonsillitis or can originate from a particular severe disease, such as bacterial endocarditis, malignant lymphoma and SLE, which need more aggressive management. Therefore, we studied patients who were admitted with short-term fever or long-term fever to find out their causes of febrile disease and to compare the differences with previous other studies. METHODS: 601 patients with fever above 37.2 degree centigrade or those who were transferred from other hospitals due to long-term fever were enrolled from Jan. 1991 to Jun. 1997. Patients' medical records reviewed and were classified according to disease, sex, age. Standardization of Petersdorf's rule for F.U.O. was used. RESULTS: 601 patients were randomly selected among which 301 were males and 300 females. Males were 147 and females 147 young adult patients as compared to 154 males and 153 females were elderly patients. According to disease category, the number of infections, connective tissue diseases, neoplastic diseases and other diseases were 442(73.5%), 14(2.3%), 87(14.5%) and 21(3.5%), respectively. The number of diseases of undetermined case was 37(6.2%). The most frequent disease was pneumonia with 103(31.1%). UTI and tuberculosis were the 2nd and 3rd most common diseases. The total number of F.U.O. patients was 82(13.6%). According to the disease categories there were 29(35.4%) in infections, 2(2.4%) in connective tissue diseases, 12(14.6%) in neoplasms, 2(2.4%) in others and 37(45.2%) in unknown origin. The most common disease was tuberculosis. Infection and tuberculosis were common disease category and disease in the classification of sex and age of F.U.O.. CONCLUSIONS: In the clinical study of febrile patients admitted from Jan. 1991 to Jun.1997 through medical record review, the disease category in the order of frequency was infection, neoplasm, collective tissue disease and the distribution of F.U.0. was same result. In comparison with other study, the order of connective tissue disease and neoplasm was different in other hospital study but same result was taken In comparison with Petersdorf's study.