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Most of us who are living with HIV can't point to the moment we got it. We can point to a bad flu we shrugged off. A rash we blamed on laundry detergent. A month of night sweats we told ourselves was stress. Then years of feeling completely normal — because HIV, without treatment, hides in the body for a long time before it starts breaking things.
The symptoms of HIV depend on which stage of the virus we're in. This page walks through all three — using the CDC’s plain-language description of HIV’s stages and the words we actually use with each other. If you're reading this because you're worried about a recent exposure, jump to When to test.
The short version: most people have flu-like symptoms 2–4 weeks after HIV enters the body, then feel fine for years, then — without treatment — gradually get sicker as the immune system weakens. Effective treatment can prevent progression to AIDS, but symptoms and other illnesses can still occur.
You cannot tell your HIV status from symptoms. The only way to know for sure is to get tested. About two-thirds of people get flu-like symptoms in the first two to four weeks after acquiring HIV — and about a third get none at all.7 Every symptom on this page is also caused by dozens of ordinary illnesses, which is why none of them can answer the question on its own. A test can.1
The three stages of HIV
The CDC’s public guide describes three stages: acute infection (the first few weeks), chronic infection (which can last a decade or longer without treatment), and Stage 3, which is AIDS.1 Effective ART can keep chronic HIV controlled and prevent progression to AIDS. People remain living with HIV even when treatment works; treatment does not make the chronic phase disappear.
Stage 1 — Acute HIV infection
The flu that isn't the flu
Within 2 to 4 weeks of infection, most of us develop a flu-like illness the CDC calls acute retroviral syndrome. It's the immune system meeting HIV for the first time. Symptoms come on fast, last a few days to a few weeks, and then go away — leaving us to blame it on the flu, food poisoning, or a bad hangover.2
Most common signs and symptoms:
- Fever
- A deep, unusual tiredness
- Swollen lymph nodes (glands in the neck, armpits, groin)
- Sore throat, sometimes swollen tonsils
- Joint and muscle aches
- Diarrhea
- A rash — often on the chest or back — that comes and goes
- Night sweats
- Mouth ulcers
Some people never have acute symptoms at all. The CDC notes that these symptoms feel just like other common viral infections — flu, mono, a bad cold — which is why most acute HIV infections get missed.2
Why acute HIV matters: During acute infection, our viral load is extraordinarily high and we're most infectious to others. If you think you might be in acute HIV, get a NAT (nucleic acid test) — it can detect HIV as early as 10–33 days after exposure, well before antibody tests turn positive.3
Stage 2 — The long quiet
Chronic HIV infection (clinical latency)
After acute HIV, most of us feel completely fine — sometimes for a decade or more. The virus is still replicating, still slowly damaging our immune system, but we don't feel it. This is the stage where a lot of people find out they're HIV-positive by accident: a routine physical, a blood donation, an insurance screening, a partner's diagnosis. Without treatment, this stage lasts roughly 10 years on average before advancing to Stage 3.1
What we might notice, if anything:
- Persistent swollen lymph nodes that don't quite go away
- Occasional low-grade fevers
- Fatigue that outlasts a good night's sleep
- Yeast infections in the mouth (thrush) or, for women, recurrent vaginal yeast
- Weight loss without trying
- Skin problems — folliculitis, seborrheic dermatitis, shingles at a younger-than-usual age
None of these are specific to HIV. All of them can be nothing. But if we have multiple, or they keep coming back, an HIV test is worth it.
With sustained effective treatment, many people remain well for decades and avoid AIDS. Life expectancy can approach that of people without HIV, but depends on factors including how early treatment starts, immune recovery, other illnesses, and access to care.4
Stage 3 — Advanced HIV (AIDS)
Late-stage HIV
Without treatment, HIV eventually breaks down the immune system to the point where opportunistic infections take hold. The CDC defines Stage 3 (AIDS) as CD4 count below 200 cells/mm³ or the presence of an AIDS-defining condition, regardless of CD4 count.1
Signs and symptoms of advanced HIV:
- Rapid weight loss (formerly called "wasting")
- Recurring fevers or profuse night sweats that don't stop
- Extreme, unexplained tiredness
- Prolonged swollen lymph nodes
- Chronic diarrhea lasting more than a week
- White patches on the tongue, mouth, or throat (thrush)
- Pneumonia — particularly PJP (pneumocystis pneumonia)
- Red, brown, pink, or purplish blotches on or under the skin (Kaposi sarcoma)
- Memory loss, depression, and neurological symptoms
These symptoms are what HIV looked like in the 1980s and 1990s, and they're what HIV still looks like when people don't have access to treatment.5
Even at Stage 3, treatment works. A late diagnosis is not a death sentence. ART can suppress HIV and help immune function recover even after a late diagnosis. Recovery varies, some complications can leave lasting effects, and opportunistic infections may need treatment or preventive medicines alongside ART.
What we wish we'd known about symptoms
Some of us look back on the acute phase and can pinpoint it exactly — the "worst flu of my life." Others don't remember anything unusual at all. Both are normal. A few things we wish someone had told us:
- Your body doesn't hide it forever, but it can hide it for a long time. Someone who feels fine can still have HIV. Symptoms do not indicate viral load; maintaining viral suppression on ART prevents sexual transmission. This is why routine testing matters — it's not a moral judgment, it's just how the virus works.
- An HIV symptom checklist is not a diagnosis. Every symptom on this page is also on the symptom list for dozens of other illnesses. Only a test tells us. Googling symptoms at 2 a.m. gives us panic, not answers.
- Late-stage HIV is a treatment access problem, not a virology problem. Barriers to testing, care, and medication are major reasons for late presentation. Treatment failure and incomplete immune recovery can also contribute; each person needs an individual assessment.
- Symptoms after starting treatment usually settle down. The first few weeks on ART can bring some side effects — nausea, headaches, sleep changes. Most fade within a month. If they don't, we tell our provider — regimens can be switched.
When to get tested
If we think we might have been exposed to HIV, we don't wait for symptoms. Symptoms are unreliable: some people have no early symptoms, and those who do may have symptoms shared with other illnesses. A test is the only answer.3
I had a possible exposure yesterday. Should I test today?
No test can rule out HIV from yesterday’s exposure. Get urgent advice about PEP as soon as possible, ideally within 24 hours and no later than 72 hours after a potentially significant exposure. Baseline testing is still useful, but should not delay the first PEP dose. An emergency department or an available urgent PEP service can assess you.8
How long after exposure until a test can catch HIV?
Depends on the test. In the absence of antiretroviral medication, the usual windows are 10–33 days for a NAT, 18–45 days for a lab antigen/antibody test, and 23–90 days for an antibody test. PrEP or PEP can delay detection, so follow the testing schedule for that regimen rather than applying these windows on your own.3
I feel fine. Do I still need to test?
Yes. Most of the years of untreated HIV are years when people feel fine. The CDC recommends everyone aged 13–64 get tested at least once, and people with ongoing risk factors test more often.6
Full details on test types and where to find them are on our HIV Testing page.
If you're supporting someone
If someone you love is worried they might have HIV — showing symptoms, or just anxious after an exposure — the most useful things you can do are usually the smallest:
- Don't diagnose them. Don't reassure them ("you don't have HIV, don't be dramatic"). Both feel like dismissal.
- Offer to go with them to get tested. Waiting rooms are lonely.
- If they test positive, remember: this is not a death sentence, it's a chronic condition. Treatment works. They will be okay. Tell them that.
- Don't tell anyone else without their permission. Ever.
Florida testing entry points: Florida county health departments, participating HIV clinics, and community organizations can help arrange testing; ask about availability, eligibility, and any charges. Options include LGBTQ+ community health centers such as Compass (Palm Beach), Metro Wellness (Tampa Bay), and Empower U (Miami). Or call the FL HIV/AIDS Hotline at 1-800-352-2437.
References & Sources
Sources for HIV clinical staging, acute and chronic symptoms, and testing windows.
- CDC — About HIV (Stages of HIV Infection). CDC clinical staging of HIV: acute, chronic, and Stage 3 (AIDS). ↩ ↩ ↩ ↩
- CDC — Patient Information Sheet: Acute HIV Infection (PDF). CDC's patient handout on acute retroviral syndrome symptoms. ↩ ↩
- CDC — Getting Tested for HIV (Test Types & Window Periods). CDC guidance on the three HIV test types and each test's window period. ↩ ↩ ↩
- HHS — Adult and Adolescent ARV Guidelines (When to Start). Federal treatment guidelines documenting near-normal life expectancy on effective ART. ↩
- HHS — Guidelines for the Prevention and Treatment of Opportunistic Infections in Adults with HIV. Federal guidelines on AIDS-defining conditions and opportunistic infections. ↩
- CDC — HIV Screening and Testing Recommendations. CDC recommendation that everyone 13–64 be tested at least once as part of routine health care. ↩
- Symptoms of HIV, HIV.gov, U.S. Department of Health and Human Services. ↩
- CDC — Antiretroviral Postexposure Prophylaxis After Nonoccupational Exposure to HIV, United States, 2025. Urgent initiation, baseline testing, and follow-up after PEP. ↩