Early Symptoms of HIV in Men
Swollen lymph nodes and fever are hallmark symptoms during the initial stage of HIV infection. However, acute-phase symptoms vary significantly among individuals. Some patients experience only mild or subtle symptoms, and the fever associated with HIV is often low-grade, making it easy to overlook.

HIV primarily targets the human lymphatic system. After entering the body, the virus reaches local lymph nodes within 1–2 days, causing a rapid, short-term decline in CD4+ T lymphocytes and triggering viremia through viral replication—leading to acute infection and the onset of early acute-phase symptoms.

At this stage, most patients develop symptoms such as swollen lymph nodes, fever, night sweats, and rash; however, some individuals may exhibit only mild symptoms—or none at all.