Definition
HIV affects immune defences.
Symptoms
Having no symptoms does not exclude infection.
How it may be discovered
Testing establishes your status.
When to seek care
After a possible exposure, seek care immediately. Post-exposure prophylaxis must start within 72 hours.
Investigations and tests
Test selection and repeat testing depend on time since exposure.
Reaching a diagnosis
A reactive result requires confirmation.
Treatment options
Antiretrovirals control infection. Condoms and PrEP, when indicated, help prevent it. An undetectable viral load on treatment prevents sexual transmission.
Explore this topic further
Continue with related explanations of how the body works and treatment options.