Virus that attacks the immune system, can progress to AIDS if untreated. Review possible symptoms, contributing factors, assessment, warning signs and care opti
About HIV/AIDS
Virus that attacks the immune system, can progress to AIDS if untreated
HIV (Human Immunodeficiency Virus) attacks the body's immune system, specifically CD4 cells (T cells), which help fight infections.
Without treatment, HIV can progress to AIDS (Acquired Immunodeficiency Syndrome), the most severe phase of HIV infection.
Modern antiretroviral therapy (ART) allows people with HIV to live long, healthy lives and prevents transmission to others.
Editorial update (28 September 2026): structured medical content awaits clinical reviewer sign-off.
How assessment may be approached
Assessment may include symptom timing, fever, exposures, travel, contacts, vaccination status and medicines. Tests may identify a specific infection, but treatment decisions should match clinical urgency and local guidance.
Care can range from monitoring and fluids to prescribed treatment, infection-control measures and follow-up. Ask whether antibiotics or other medicine are actually indicated and how to prevent spread.
When to seek prompt care
Seek urgent care for stiff neck, severe headache, confusion, breathing difficulty, persistent vomiting, dehydration, rash with fever, severe weakness or rapidly worsening illness.
Symptoms
- Flu-like symptoms (acute infection)
- Fever and night sweats
- Swollen lymph nodes
- Rapid weight loss
- Chronic diarrhea
- Opportunistic infections
- Neurological disorders
Possible causes
- Unprotected sexual contact
- Sharing needles or syringes
- Mother to child transmission
- Blood transfusion (rare in developed countries)
- Occupational exposure
Care and treatment options
- Antiretroviral therapy (ART)
- Regular viral load monitoring
- CD4 count monitoring
- Prophylaxis for opportunistic infections
- Lifestyle modifications
- Mental health support
Key points
- Not curable but highly treatable
- Undetectable = Untransmittable (U=U)
- PrEP can prevent HIV
- Early treatment is crucial
- Regular testing recommended
Preparing for a consultation
- Fever readings and timing of symptoms.
- Travel, food, water, animal or contact exposures.
- Vaccination history and immune-suppressing medicines.
- Recent test results, medicines and who else may be unwell.
Questions worth asking
- Is HIV/AIDS the most likely explanation for these symptoms, and what alternatives should be checked?
- Which symptoms or findings would require urgent review?
- Are medicines, underlying health problems or lifestyle factors contributing?
- What tests or examinations are needed now, and what can safely wait?
- What treatment or self-care options are reasonable, and when should I be reviewed again?
- What is the expected benefit, limit, cost and follow-up plan for the suggested care?
Related conditions
Related clinicians
Medical information limitations
This page summarizes listed condition information and cannot confirm a diagnosis or choose treatment. Do not start, stop or change prescribed treatment based only on this page.
Common questions
What is HIV/AIDS?
Virus that attacks the immune system, can progress to AIDS if untreated This is general information; the name describes a possible diagnosis or clinical problem, not a personal diagnosis.
How might a clinician assess HIV/AIDS?
Assessment may include symptom timing, fever, exposures, travel, contacts, vaccination status and medicines. Tests may identify a specific infection, but treatment decisions should match clinical urgency and local guidance.
What care may be discussed?
Care options listed include Antiretroviral therapy (ART), Regular viral load monitoring, CD4 count monitoring, Prophylaxis for opportunistic infections. Which option is appropriate depends on the confirmed cause, severity, preferences and contraindications.
When should HIV/AIDS be checked urgently?
Seek urgent care for stiff neck, severe headache, confusion, breathing difficulty, persistent vomiting, dehydration, rash with fever, severe weakness or rapidly worsening illness.
How should I prepare for a consultation?
Fever readings and timing of symptoms. Travel, food, water, animal or contact exposures. Vaccination history and immune-suppressing medicines. Recent test results, medicines and who else may be unwell. Bring previous reports and a current medicine list where relevant.
Can this page diagnose or treat the condition?
No. A page about HIV/AIDS can help you understand possible features and questions, but it cannot confirm a diagnosis or choose treatment. A qualified clinician should assess your symptoms, history and any test results.
General information only; it is not a diagnosis or a substitute for a qualified clinician’s advice.