The primary symptoms of AIDS are mainly due to immunodeficiency and opportunistic infections caused by a weakened immune system. During the acute phase of AIDS, the virus replicates in large numbers, leading to immune damage and disorder. In the acute phase, symptoms such as rashes, fever, sore throat, weight loss, and diarrhea are common. During the symptomatic phase, symptoms like unexplained fever, diarrhea, chest tightness, coughing, phlegm, and numerous white secretions on the oral tongue are commonly observed.