In this paper the authors analyze several aspects related to fever in 100 patients, of both sexes and different ages, bearers of acquired toxoplasmosis, lymphadenopathic form. Simultaneously, other clinical manifestations of the disease were considered as well. As basic finding the authors observed that fever was not at all a constant sign in the clinical picture of the said form of the disease. It was absent in at least 27% of the studied patients; when present, it lasted in general for a period of time not longer than one month and less than some other symptoms. Usually, fever was higher in the afternoon. The facts above are of practical importance, and should be taken into account whenever a discussion on differential diagnosis of fever of unknown origin is under consideration.