HIV symptoms vary by the stage of infection, known as acute HIV infection (Stage 1), chronic HIV infection (Stage 2), and AIDS (Stage 3). During primary infection, the symptoms are caused by the virus ...

Recent medical research reveals that early HIV symptoms often masquerade as common illnesses, leading many to delay seeking medical attention. Dr. Sarah Chen, infectious disease specialist at Johns ...

In 1981, physicians in Los Angeles reported five young patients with Pneumocystis pneumonia, a rare lung infection later recognized as the first sign of HIV infection and a defining illness of AIDS.