
Many people may think that HIV infection always causes severe or clearly noticeable symptoms. However, in reality, early-stage infection may show only mild symptoms similar to a common cold or flu, causing many to overlook important bodily signs.
HIV (Human Immunodeficiency Virus) is a virus that attacks the body's immune system, especially CD4 white blood cells that protect and fight off infections. When immunity weakens, the body becomes more susceptible to infections and illnesses. Many people confuse HIV with AIDS, but they are different as follows.
Simply put, everyone with AIDS was previously infected with HIV, but not everyone with HIV develops AIDS, especially now that antiretroviral drugs can effectively control the virus.
1. Unexplained fever
Fever is one of the most common symptoms in early HIV infection. Patients may have a low to high fever along with fatigue, resembling the flu.
2. Sore throat and headache
Many experience sore throat, headaches, or general discomfort like having a cold, often not linking these symptoms to possible HIV infection.
3. Swollen lymph nodes
When the body fights the virus, lymph nodes in the neck, armpits, or groin may swell, which is another early sign of infection.
4. Skin rash
Some infected individuals may develop red rashes on the torso, arms, or legs, typically occurring with fever and fatigue within 2-4 weeks after infection.
5. Muscle and joint pain
Muscle aches, joint pain, or body soreness can occur, similar to flu symptoms, causing many to mistake it for a common illness.
6. Unusual fatigue
Feeling tired or weak despite adequate rest, or experiencing greater than normal fatigue, can be a warning sign, especially with a history of risk exposure.
7. Nausea, vomiting, or diarrhea
Some may experience gastrointestinal symptoms such as nausea, vomiting, or diarrhea early in the infection.
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1. Acute infection stage (2-4 weeks after exposure) Some may have no symptoms, while others show cold-like symptoms such as
2. Asymptomatic stage
After initial symptoms subside, most infected individuals may appear healthy and symptom-free for many years, even though the virus continues to damage the immune system. Without treatment, this stage can last about 5-10 years or more, depending on the person.
3. AIDS stage
When immunity is severely weakened, symptoms such as
If you have engaged in risky behaviors such as unprotected sex, sharing needles, or contact with potentially infected bodily fluids, you should get tested according to medical advice. Do not wait for symptoms since early HIV infection may not show clear signs. Early diagnosis allows timely antiretroviral treatment that effectively controls the virus and reduces long-term complications.
If diagnosed with HIV, and start consistent antiretroviral therapy, most people can live nearly as long as the general population and may never progress to AIDS. Therefore, the most important step is testing after exposure risk, as early HIV often shows no symptoms or only cold-like signs that are hard to detect without testing.
Information source: Communications Department, Faculty of Medicine,Ramathibodi Hospital,,BNH Hospital