In the acute phase of AIDS, fever, headache, night sweats (sweating abnormally after going to sleep and stopping after waking up), nausea, vomiting, general malaise, and many other symptoms may occur, of which fever is the most common, but there is no certainty that the symptoms will appear. AIDS can be divided into acute stage, asymptomatic stage and AIDS stage, of which the acute stage mostly appears in the initial infection of HIV (human immunodeficiency virus) about 2 to 4 weeks, may appear fever, headache, night sweats, nausea, vomiting, diarrhea, sore throat, myalgia, rash, general malaise, and many other symptoms, usually mild, can be gradually alleviated with the condition. Asymptomatic period can be transferred from the acute phase, some patients can also be no acute phase, but directly into the asymptomatic period, this period generally lasts 6 to 8 years, the specific length of time varies from person to person, this period is infectious. The AIDS stage is the final stage of HIV infection, patients may have fever, diarrhea, night sweats, weight loss that lasts more than 1 month, some patients may have memory loss, apathy, headache, epilepsy and other neuropsychiatric symptoms, as well as persistent generalized lymph node enlargement, due to the lowering of the immune system, the body may also be prone to a variety of opportunistic infections and tumors. When patients have the above symptoms and suspect that they are suffering from AIDS, they should consult a doctor in time to find out the cause of the disease under the guidance of the doctor, and should not make blind judgment on their own in order to avoid delaying their condition.