Shortly after being infected with HIV, some people – but not all people – have flu-like symptoms (fever, muscle aches, feeling tired) that last a few days and then go away. This is sometimes called seroconversion illness or acute HIV infection. Most people with HIV have no symptoms for many years. However, even without symptoms, people who are newly infected have large amounts of HIV circulating in their blood and are highly infectious at that time.
HIV infection cannot be diagnosed from symptoms alone. The symptoms of worsening HIV infection and AIDS – swollen glands, fever, and skin rashes – can also be caused by other illnesses, many of which are more common than HIV infection. Only an HIV test can show whether a person has HIV .
