The initial rash of HIV is not necessarily accompanied by itching. The initial rash of AIDS mostly occurs about 2-4 weeks after HIV infection. The rash may be diverse, may be accompanied by itching or not, and may heal spontaneously in 1-2 weeks. The initial clinical manifestations of AIDS are: 1. persistent and widespread lymph node enlargement, especially in the neck, armpit, and inguinal lymph nodes, which are enlarged, usually about 1 cm in diameter, firm, painless, and mobile for more than 3 months; 2. unexplained fever and night sweats for several weeks; 3. unexplained and severe fatigue for several weeks; 4. decreased appetite, which can be reduced within 2 months 10%; 5. Dry cough and cough can appear; 6. Chronic diarrhea with watery stools can appear.