part_of part of part of has_part has part has_part has_scattered_temporal_region brucellosis diurnal variation fever process YL, YH Fever is the most common(92.8% of adults, 87.5% of children) feature of brucellosis. There are no characteristic patterns which differentiate fever due to brucellosis from other febrile illnesses. The temperature usually shows diurnal variations, being high in the afternoon and evening and returning to normal in morning. This diurnal variation is of clinical importance as the treating clinician may find the temperature to be normal if the patient is seen in a morning clinic. The fever tends to subside if the patient rests in bed, and rises again following physical exercise. The temperature may be of a low grade and the patient may be unaware of its presence, and it can only be detected during hospitalization and regular measurements. The temperature usually ranges from 37.5-40C or higher. P76 Madkour, M. Monir, Brucellosis, 1989, ISBN 0-7236-9041-1 PMID: 18045560 human brucellosis disease course brucellosis pathological bodily process body temperature staying normal body temperature elevation mornings during the course of disease afternoons during the course of disease