References UK clinical guidance from the NHS, the British HIV Association (BHIVA), and the British Association for Sexual Health and HIV (BASHH). Last updated: April 2026.
People living with HIV have a higher risk of several lung problems compared to the general population. This is true even for those on effective treatment with an undetectable viral load, partly because of chronic inflammation and partly because smoking rates are higher in HIV-positive populations.
Understanding which lung conditions are more common and what symptoms to watch for can help you get early treatment when it matters most.
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Lung Infections
Pneumocystis pneumonia (PCP)
PCP is caused by the fungus Pneumocystis jirovecii. It almost only affects people with a CD4 count below 200. Symptoms include a dry cough, breathlessness on exertion, and fever that gets worse over days or weeks. PCP is serious but treatable, and routine prophylaxis (usually co-trimoxazole) is standard for anyone with a low CD4 count.
Tuberculosis (TB)
HIV is the biggest known risk factor for developing active TB from a latent infection. Symptoms include a persistent cough (often with blood), night sweats, weight loss and fever. Anyone diagnosed with HIV in the UK is screened for latent TB at their first clinic appointment.
Bacterial pneumonia
Ordinary pneumonia is more common and more severe in people with HIV, particularly smokers. The pneumococcal vaccine is recommended for everyone living with HIV.
Non-infectious Lung Conditions
| Condition | Risk with HIV | Key Risk Factor |
|---|---|---|
| COPD | 2-3x higher | Smoking + chronic inflammation |
| Lung cancer | 2-4x higher | Smoking (primary driver) |
| Pulmonary hypertension | Rare but elevated | HIV itself, some drugs |
| Asthma | Slightly elevated | Immune dysregulation |
Symptoms That Need Urgent Attention
- Cough lasting more than three weeks
- Coughing up blood
- Breathlessness that’s new or getting worse
- Chest pain with breathing
- Unexplained weight loss
- Night sweats that soak the bedding
Any of these warrant a same-week GP appointment, or A&E if breathing is a struggle at rest.
How to Reduce Your Risk
- Stop smoking — the single biggest thing you can do for your lungs
- Stay on ART — an undetectable viral load lowers overall inflammation
- Get vaccinated — pneumococcal, annual flu, and COVID-19 boosters
- Screen for latent TB — standard at HIV diagnosis
- Exercise — improves lung function and overall fitness
Read more: Flu and HIV | Cancer and HIV | What is HIV?
Frequently Asked Questions
Does a low CD4 count affect my lung health?
Yes. A CD4 count below 200 significantly raises the risk of opportunistic infections like PCP. Getting on ART and rebuilding your CD4 count is the main way to reduce this.
Should I have regular lung screening?
Routine lung cancer screening is not standard for people with HIV in the UK, but if you smoke or have smoked heavily, talk to your HIV team about whether screening is appropriate for you.
Is COPD more aggressive in people with HIV?
Studies suggest COPD progresses more quickly in people living with HIV. Stopping smoking is the single most effective intervention to slow progression.
Related reading
- A to Z of Sex: Sexual Health Terms Explained
- Alcohol and HIV: What You Need to Know
- Anxiety and HIV: Coping and Getting Support
- Are All STIs Curable?
- Blood Problems and HIV: Anaemia, Low Platelets and More
Sources
- NHS — Sexual health conditions
- BASHH — UK clinical guidelines for STI management
- British HIV Association (BHIVA) — HIV treatment guidelines
- Terrence Higgins Trust — sexual health information
- UK Health Security Agency — STI surveillance data
Steve Page is a recognised expert on Sexually Transmitted Diseases (STDs) and STD treatments, having published numerous articles in peer-reviewed journals and presented his research at conferences around the world. He has an in-depth understanding of the latest medical research on STDs, and is an advocate for the development of new treatments and protocols to improve the health of those affected. In addition to his research, he has dedicated his career to understanding the causes and symptoms of STDs, as well as how to best treat those impacted.
