Last reviewed: 15 September 2026
HIV symptoms can vary considerably from person to person. Some people develop flu-like symptoms during the first weeks after infection, while others have no noticeable symptoms at all. Symptoms alone cannot tell you whether you have HIV. The only way to know your HIV status is to test.
Without effective treatment, HIV can progress through three stages: acute HIV infection, chronic HIV infection and, eventually, AIDS. Modern antiretroviral therapy (ART) can prevent or greatly slow this progression and allows people living with HIV to live long and healthy lives.
The symptoms of HIV depend partly on the stage of infection. They are also non-specific, meaning that many of the same symptoms can be caused by other infections or medical conditions.
Acute HIV infection is the earliest stage of HIV. When symptoms occur, they usually develop around 2 to 4 weeks after infection. Some people have no symptoms at all.
Possible symptoms of acute HIV infection include:
These symptoms may last from a few days to several weeks. Because they can also occur with many other illnesses, they cannot be used to diagnose HIV.
After the acute stage, HIV enters the chronic stage. This is sometimes called clinical latency. A person may feel completely well and have no HIV-related symptoms for years.
Without treatment, HIV can continue to damage the immune system during this period. Effective HIV treatment suppresses the virus and can prevent progression to AIDS.
The common symptoms of acute HIV infection are generally similar in men and women. Individual symptoms can still vary considerably from one person to another. For that reason, symptoms should never be used to determine whether someone has HIV.
AIDS is the most advanced stage of HIV infection. It develops when HIV has severely damaged the immune system. AIDS is diagnosed using specific medical criteria rather than symptoms alone.
Possible signs and illnesses associated with advanced HIV can include:
These symptoms can also be caused by conditions other than HIV. A healthcare professional must evaluate them and HIV testing is required to determine HIV status.
If symptoms occur during acute HIV infection, they most commonly begin around 2 to 4 weeks after infection. Some people do not experience early symptoms at all, and chronic HIV can remain without noticeable symptoms for years.
You should therefore not wait for symptoms before deciding whether to test after a possible exposure.
Five days after a possible exposure is earlier than the typical period in which acute HIV symptoms develop. Symptoms at this stage cannot confirm or rule out HIV.
If a possible HIV exposure occurred within the last 72 hours, seek urgent medical advice about post-exposure prophylaxis (PEP) rather than waiting for symptoms or a self-test result.
HIV testing should be based on the possible exposure and the window period of the test you are using, not on whether symptoms are present.
Different HIV tests have different window periods, so testing too early can produce a non-reactive result even when infection has occurred.
For more information, see our When to test for HIV? page.
If you have symptoms after a recent possible HIV exposure or are unsure which type of test is appropriate, contact a healthcare professional or sexual health service for advice.
