It's too hot, so doing manual labor will make you have a fever.

There are many diseases that cause fever, which can be divided into two categories according to the different causes.

I. Infectious diseases

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.

II. Non-communicable diseases

1, hematological diseases and malignant tumors such as leukemia, malignant histiocytosis, malignant lymphoma, colon cancer, primary hepatocellular carcinoma, etc.

2. Allergic diseases such as drug fever and rheumatic fever.

3. Connective tissue diseases, such as systemic lupus erythematosus (SIE), dermatomyositis, polyarteritis nodosa and mixed connective tissue diseases (MCTD).

4, others such as hyperthyroidism, thyroid crisis. Severe dehydration or bleeding, heatstroke, heatstroke, fracture, extensive burn, cerebral hemorrhage, visceral vascular infarction, tissue necrosis, etc.