>>29388116Fever is a common symptom of many medical conditions:
Infectious disease, e.g., influenza, primary HIV infection, malaria, Ebola, infectious mononucleosis, gastroenteritis, Lyme disease
Various skin inflammations, e.g., boils, abscess
Immunological diseases, e.g., lupus erythematosus, sarcoidosis, inflammatory bowel diseases, Kawasaki disease, Still disease, Horton disease, granulomatosis with polyangiitis, autoimmune hepatitis, relapsing polychondritis[32]
Tissue destruction, which can occur in hemolysis, surgery, infarction, crush syndrome, rhabdomyolysis, cerebral bleeding, etc.
Reaction to incompatible blood products
Cancers, most commonly kidney cancer and leukemia and lymphomas
Metabolic disorders: gout, porphyria
Inherited metabolic disorder: Fabry disease[33]
Persistent fever that cannot be explained after repeated routine clinical inquiries is called fever of unknown origin.
