Liver fever, called hepatic hyperthermia, is usually caused by the following factors: 1. It is often caused by infectious factors, such as bacterial infection, viral infection, or fungal infection, and can occur when the body has liver fever and peripheral weakness. 2. Liver fever can also occur in patients with extremely low immunity, for example, patients suffering from tuberculosis or diseases of the blood system, tumor diseases or AIDS caused by low immunity, or other infectious diseases can have clinical symptoms and manifestations of liver fever, and liver fever can also occur in the case of allergies.