Human Immunodeficiency Virus (HIV)
HIV is a virus that attacks the body's immune system, specifically the CD4 cells which help the body fight off infections. While there is currently no cure, effective medical treatment allows most people with the virus to live long and healthy lives.
Overview
HIV is a virus that attacks the body's immune system, specifically the CD4 cells which help the body fight off infections. While there is currently no cure, effective medical treatment allows most people with the virus to live long and healthy lives.
Symptoms
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Causes
- •Infection with the Human Immunodeficiency Virus (HIV)
- •Transfer of infected blood, semen, or vaginal fluids
- •Sharing contaminated needles or syringes
- •Transmission from mother to child during birth or breastfeeding
Risk factors
- •Unprotected sexual contact
- •Sharing needles or injection drug equipment
- •Having another sexually transmitted infection (STI)
- •Occupational exposure in healthcare settings
How it progresses
3 stages- Stage 1 — EarlyMild or intermittent symptoms; easily mistaken for something minor.Often missed
- Stage 2 — ProgressiveSymptoms become more frequent or severe.
- Stage 3 — EstablishedDaily life affected; medical care strongly recommended.
How it's diagnosed
- •Blood test for HIV antibodies and antigens
- •Rapid point-of-care saliva tests
- •CD4 cell count monitoring
- •Viral load testing (RNA)
Treatment options
General educational information only — no dosage advice. Always follow guidance from a qualified clinician.
- •Antiretroviral therapy (ART) to suppress the virus
- •Regular monitoring of immune system health
- •Preventative medicine for opportunistic infections (Prophylaxis)
- •Vaccinations for common illnesses like the flu and pneumonia
- •Adhering strictly to medication schedules
- •Maintaining a balanced, nutritious diet
- •Practicing safe sex to prevent transmission and reinfection
- •Avoiding tobacco and limiting alcohol consumption
Complications
- •Long-term damage if untreated
- •Reduced quality of life
- •Worsening symptoms over time
- •Recurrence of human immunodeficiency virus (hiv)
Prevention
- •Maintain a healthy lifestyle
- •See a clinician for routine check-ups
When to seek help
- •Symptoms persist beyond a few days
- •Symptoms interfere with daily activities
- •New or worsening symptoms appear
- •Concerning changes related to human immunodeficiency virus (hiv)
- Rapid, unexplained weight loss
- Persistent high fever or night sweats
- Severe, recurring infections (opportunistic infections)
- Chronic diarrhea lasting more than a week
- Confusion or neurological changes
In any emergency, call your local emergency number or go to the nearest emergency department.
Real-world questions
- ›Can Human Immunodeficiency Virus (HIV) cause headaches?
- ›Is Human Immunodeficiency Virus (HIV) reversible?
- ›How quickly does Human Immunodeficiency Virus (HIV) progress?
- ›Is Human Immunodeficiency Virus (HIV) hereditary?
- ›Can Human Immunodeficiency Virus (HIV) be prevented?
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Frequently asked questions
Possible causes of Human Immunodeficiency Virus (HIV) include Infection with the Human Immunodeficiency Virus (HIV), Transfer of infected blood, semen, or vaginal fluids, Sharing contaminated needles or syringes, Transmission from mother to child during birth or breastfeeding.
Human Immunodeficiency Virus (HIV) can be serious and may require prompt medical attention, especially if symptoms are severe or worsening.
Duration varies between individuals. Many cases improve with appropriate care, while others may persist longer and require ongoing management.
Human Immunodeficiency Virus (HIV) typically benefits from medical evaluation and should not be ignored.
Consider seeing a clinician if symptoms are severe, persistent, worsening, or if you have any concerns related to general.
Sources
Information based on general medical references such as:
Last reviewed: May 2026