The common causes of recurrent high fever in adults include infectious diseases and non-infectious diseases.
1. Infectious diseases: repeated high fever in adults may be caused by infection, common infectious diseases are pneumonia, tuberculosis, upper respiratory tract infections, etc., due to the metabolic products of pathogenic microorganisms or their toxins, can stimulate leukocytes to produce and release endogenous pyrogen, which acts on the thermoregulatory center, so that the thermoregulatory point is shifted upward, thus causing high fever.
2. Non-infectious diseases: if the patient suffers from malignant tumors such as leukemia, lymphoma, etc., there will also be repeated high fever in adults, because the use of chemotherapeutic drugs such as cytarabine, bleomycin, etc., will cause drug fever, which manifests itself as repeated and persistent high fever.
There may be other reasons for recurrent high fever in adults, and it is recommended to go to the hospital in time to clarify the cause of the disease and then carry out standardized treatment, so as not to delay the condition.