People with AIDS are more prone to developing fever. During the onset of AIDS, it is common for the fever to last for over a month, with weight loss exceeding 10 kilograms, along with symptoms such as swollen lymph nodes throughout the body, rash, cough, sore throat, and fever. The fever in AIDS patients is mostly caused by opportunistic infections, typically involving viruses, bacteria, and fungi. The treatment of fever in AIDS should be tailored to the specific circumstances, requiring antiretroviral therapy for HIV and treatment targeting the opportunistic infections.