AIDS is the acronym for AIDS, also known as acquired immunodeficiency syndrome, which specifically occurs as a sexually transmitted disease caused by human immunodeficiency virus HIV infection and is characterized by severe defects in cellular immune function. AIDS patients clinically suffer from systemic symptoms such as swollen lymph nodes, anorexia, chronic diarrhea, weight loss, fever, and malaise, and gradually develop various opportunistic infections and tumors and die. There is no complete cure for AIDS, so it must be detected and treated early.