Understanding HIV Symptoms: What You Need to Know

Learn how HIV symptoms can vary by stage, the importance of testing, and how treatment supports a long and healthy life.

When it comes to HIV, knowing the signs and symptoms can help you stay on top of your health. But here’s the thing: not everyone with HIV has symptoms. In fact, some people don’t feel sick at all until the infection has progressed to AIDS. That’s why it’s so important to learn the basics and know when to get tested.

Early (Acute) Symptoms

Some people develop flu-like symptoms two to four weeks after getting HIV. These early signs—called acute HIV symptoms—are your body’s natural response to the virus. Common symptoms may include:

• Fever
• Chills
• Rash
• Night sweats
• Muscle aches
• Sore throat
• Fatigue
• Swollen lymph nodes
• Mouth sores

These symptoms can look a lot like other common illnesses, so it’s easy to miss or dismiss them. Don’t assume you have HIV just because you have any of these symptoms—they can be similar to those caused by other illnesses. If you think you may have been exposed to HIV, then get an HIV test. The most important takeaway: The only way to know for sure if you have HIV is to get tested regularly.

Later Symptoms: Chronic or Advanced HIV

After the acute phase of a new infection, HIV moves into what’s often called chronic HIV, clinical latency, or asymptomatic HIV. During this stage, the virus is still active, but it multiplies very slowly. Many people don’t have any symptoms at all—and this phase can last for years for some people.

Just because you feel fine doesn’t mean HIV isn’t affecting you—the inflammation from the infection causes damage to your body. Without treatment, this stage can last 10 to 15 years (sometimes less) but will eventually progress.

The good news? HIV treatment works incredibly well. Taking your medication as prescribed can keep the virus undetectable. If you maintain an undetectable viral load, then you can live a long, healthy life—and you won’t transmit HIV to your sexual partners.

However, it’s important to remember that if your viral load becomes detectable, then you can pass the virus to others—even if you have no symptoms. That’s why regular checkups and routine lab work are so important.

AIDS: The Most Advanced Stage of HIV Infection

If HIV isn’t treated, it can progress to stage 3, also known as AIDS (Acquired Immunodeficiency Syndrome). At this point, the immune system is severely weakened and can’t fight off certain infections and illnesses, and it’s more likely to develop certain cancers. Many of the serious illnesses seen in people with AIDS come from opportunistic infections: conditions that take advantage of the body’s weakened immune system.

Symptoms of AIDS can include:

• Rapid weight loss
• Recurring fever or heavy night sweats
• Extreme and unexplained tiredness
• Swollen lymph nodes that last for weeks
• Diarrhea that lasts more than a week
• Sores in the mouth, anus, or genitals
• Pneumonia
• Memory loss, confusion, or other neurological issues

These symptoms might be linked to other health problems—but if you’re experiencing them, it’s time to talk to your health care provider and get tested or re-engage in HIV treatment. If you have been diagnosed with HIV, then a health professional will use specific criteria to determine whether HIV has progressed to AIDS. Most people are able to reverse the complications of AIDS once they are on medication to suppress the virus.

Bottom Line: Testing Is Essential

HIV symptoms aren’t always obvious—and sometimes, they don’t show up at all. That’s why regular testing matters.

If you think you’ve been exposed to HIV, don’t wait for symptoms to appear. Getting tested is the only way to know your status.

And if you test positive, know this: HIV treatment is highly effective. Taking HIV medicine as prescribed helps people live long, healthy lives—and it prevents the virus from being passed on to others. Over the years, the treatment for HIV has become much easier (fewer pills and fewer side effects), so don’t be afraid to know your status.

You can get tested in many places: at home, at a health fair, at your doctor’s office, a community health clinic, your local health department, and many other places. Use the HIV Services Locator to find a testing site near you.

To learn more about HIV symptoms, testing, and prevention, visit HIV.gov and explore the “HIV Health & Wellness” section for more information and resources.