infectious disease
It ranks first among the fevers investigated, including common infectious diseases, systemic or focal infections caused by various pathogens. Infectious fever caused by bacteria is the most common, followed by viruses.
Hematological diseases and malignant tumors
Such as leukemia, malignant histiocytosis, malignant lymphoma, colon cancer and primary hepatocellular carcinoma.
allergic disease
Such as drug fever and rheumatic fever.
Connective tissue disease
Such as systemic lupus erythematosus (SIE) dermatomyositis, nodular polyarteritis and mixed connective tissue disease (MCTD).
other
Such as hyperthyroidism and thyroid crisis. Severe dehydration or bleeding, heatstroke, heatstroke, fracture, extensive burn, cerebral hemorrhage, visceral vascular infarction, tissue necrosis, etc.