Pulmonary Hypertension — High Blood Pressure in the Lungs
Understanding Symptoms, Causes, Diagnosis & Treatment
A patient-friendly guide by RealMedVision
Last Update – May 2026
A patient came to me last year — 38 years old, a schoolteacher from Pune. She had been getting breathless on stairs for almost seven months. One doctor thought it was anemia. Another suggested anxiety.
Someone else told her she simply needed to exercise more.
Her hemoglobin was normal. Her thyroid tests were normal. Even her arm blood pressure looked fine.
Nobody had done an echocardiogram.
When we finally checked, the pressure inside her pulmonary arteries was already severely elevated. Her right heart had started enlarging.
I see this more often than I should. Many patients spend months—sometimes longer—moving between explanations before anyone properly checks the heart and lungs.
What You Will Learn
- What pulmonary hypertension actually is
- Why it is dangerous and how it damages the heart
- 7 early symptoms — explained simply
- Why Indian patients are diagnosed late
- WHO groups 1 to 5 — simplified
- How diagnosis works
- Treatment, lifestyle, and prognosis
- When to seek help immediately
What Is Pulmonary Hypertension?
Most people think of blood pressure as the reading checked on the arm. But there is another pressure system inside the lungs.
The pulmonary arteries carry blood from the right side of the heart into the lungs to collect oxygen. When pressure inside these vessels becomes too high, it is called pulmonary hypertension.
One important thing many patients do not realize—you can have completely normal arm blood pressure and still have dangerously high pressure inside the lungs. These are two separate systems.
Doctors usually confirm the condition using an echocardiogram and a test called right heart catheterization.
Pulmonary hypertension affects people across the world, but in India the real numbers are likely much higher because lung disease, rheumatic heart disease, sleep apnea, and delayed diagnosis are still very common.
Global Burden of Pulmonary Hypertension
- More common in women than men
- Often diagnosed late due to mild early symptoms
- Increasing in India because of pollution and chronic lung disease
- WHO highlights delayed diagnosis as a major concern
- Early 2D Echo testing can improve outcomes
Why It Gets Dangerous
The pulmonary arteries are supposed to stay soft and open so blood can move through them easily.
In pulmonary hypertension, these vessels slowly become narrower and stiffer. The right side of the heart—which pumps blood into the lungs—has to push harder against that pressure.
For some time, the heart manages to cope. But over months or years, that extra strain starts damaging the right ventricle itself.
Once the right heart begins to weaken, pulmonary hypertension symptoms in Indians can become more severe. Fluid starts building up in the legs and abdomen, making breathing difficult and even simple activities exhausting.
The difficult part is that this damage usually develops quietly. Many patients do not realize how serious things have become until the heart is already under significant stress.
That is why early diagnosis matters so much. Treatment works best before permanent right heart damage develops.
7 Early Symptoms of Pulmonary Hypertension in Indians
Symptom 1 — Breathlessness Getting Progressively Worse
Usually the first symptom. Not dramatic, just more winded than before while climbing stairs, walking quickly, or carrying something.
Most people assume they are out of shape. That is a reasonable assumption. The difference is that breathlessness in pulmonary hypertension in Indians usually does not improve with gentle activity. Instead, it slowly keeps getting worse over weeks without a clear reason.
Progressively worsening breathlessness over four to eight weeks with no explanation needs an echocardiogram—not reassurance.
Symptom 2 — Fatigue That Does Not Respond to Rest
Not regular tiredness after a long day. Something heavier. Present in the morning. Still there after a full weekend of sleep.
The tissues are running below the oxygen level they need. Everything feels like more effort than it should be.
In Indian women, this gets attributed to anemia, thyroid issues, or stress almost reflexively. By the time those are ruled out, months have passed. The investigation stops at a normal hemoglobin instead of expanding to include the heart and lungs.
Symptom 3 — Dizziness During Physical Activity
Lightheadedness while climbing stairs or walking. Occasionally, actual fainting.
When the heart cannot adequately increase output to meet the body’s demand during exertion, the brain briefly receives less blood. That is the dizziness. That is sometimes the fainting.
One episode of unexplained fainting during activity is reason enough to see a cardiologist within days—not weeks.
Symptom 4 — Chest Discomfort on Exertion
Not always obvious chest pain. More often a dull tightness or heaviness during physical activity that eases with rest.
The right ventricle under sustained pressure can become starved of oxygen during exertion—similar to what happens in coronary artery disease, but on the right side.
Most patients dismiss this because it does not feel like what they imagine a heart attack should feel like. It is not crushing or sudden. So it gets written off as gas or muscle tension, sometimes for years.
Any chest discomfort that reliably appears with activity and disappears with rest needs cardiac evaluation.
Symptom 5 — Swelling in the Ankles and Legs
Puffiness in the lower legs and ankles, typically worsening toward evening, that leaves a small dent when pressed with a finger.
When the right heart cannot efficiently push fluid forward, it backs up into the lowest parts of the body first. Feet and ankles, then lower legs.
Heat and prolonged standing cause this too. The concern is unexplained swelling that keeps returning—especially alongside breathlessness or unusual fatigue.
Symptom 6 — A Dry Cough Without an Obvious Cause
No fever. No cold. No allergy. Just a persistent dry cough that has been there for weeks and does not respond to standard treatment.
Elevated pulmonary pressure causes mild congestion in the lung tissue, which triggers a cough reflex. Many patients spend months on cough syrups and antibiotics before someone looks at the heart and lungs.
A dry cough lasting more than three or four weeks with no identified cause needs a pulmonary and cardiac evaluation.
Symptom 7 — Bluish Tinge of the Lips or Fingertips
A bluish or greyish discoloration of the lips, fingernails, or fingertips means the blood circulating through the body is carrying less oxygen than it should.
This symptom usually appears slightly later than the others. But when it appears, even mildly, it is a reason for same-day medical attention. Not next week. The same day.
Key Warning Signs — Do Not Ignore These Symptoms
- Sudden severe breathlessness, especially at rest
- Fainting or feeling close to fainting during activity
- Chest pain that does not improve with rest
- Bluish lips or fingertips
- Rapid swelling of the legs or abdomen over a few days
Once the right heart begins to weaken, pulmonary hypertension in Indians can become more severe. Fluid starts building up in the legs and abdomen, making breathing difficult and even simple daily activities exhausting.
Symptoms Many People Ignore
Beyond the main symptoms, there are quieter signs that many people overlook.
A heart that races during mild activity. Waking up at night feeling unable to breathe deeply. Feeling more breathless lying flat than sitting up. A vague chest heaviness that is difficult to explain properly.
Many pulmonary hypertension patients in India say they felt something was not quite right for months before seeking help. But because the symptoms came and went — or did not seem serious enough — they delayed proper evaluation.
Why Diagnosis Is So Often Delayed in India
Several things compound each other here.
Air pollution also plays a major role. Long-term exposure to PM2.5 pollution can damage pulmonary blood vessels and increase the risk of pulmonary hypertension.
Untreated sleep apnea is another major cause. Repeated drops in oxygen during sleep slowly increase pressure inside the lung arteries over time.
Rheumatic heart disease is still common in India and can damage heart valves, increasing pressure inside the lungs over time.
Unrepaired congenital heart disease is a leading cause in younger patients, particularly in areas where pediatric cardiac access is limited.
Many patients first visit general clinics where pulmonary hypertension may not be suspected early, leading to delayed diagnosis.
Many people ignore early symptoms because they appear slowly and come and go at first.
These symptoms often look similar to asthma, anemia, or anxiety, which is why pulmonary hypertension is frequently missed early.
Asthma and pulmonary hypertension can look very similar in the beginning. Both can cause breathlessness and a dry cough.
How It Gets Misdiagnosed
The difference is that asthma usually improves with inhalers and often has clear triggers. In pulmonary hypertension in Indians, breathing problems usually keep getting worse despite treatment.
Anemia is often checked first because fatigue and breathlessness are common with low hemoglobin. But when blood tests come back normal, many patients still do not get checked further.
Anxiety and stress are also common explanations, especially in younger women, which can delay the correct diagnosis for months.
Obesity or low fitness levels are also common explanations, but pulmonary hypertension symptoms usually keep getting worse over time instead of improving.
An echocardiogram (2D Echo) is the main test used to detect pulmonary hypertension, but many patients do not get this test early enough.
Ask your doctor specifically: “Can I have an echocardiogram to check my pulmonary artery pressure?”
WHO Classification—Which Type Is It?
Pulmonary hypertension is not a single disease. It can develop for several different reasons. To make diagnosis and treatment easier, the World Health Organization (WHO) divides it into five main groups.
WHO Group | Main Cause | Relevance in India |
|---|---|---|
Group 1 PAH | Lung artery wall disease | Common in young women aged 20–50 |
Group 2 | Left heart or valve disease | Very common |
Group 3 | COPD, lung disease, sleep apnea | Very common |
Group 4 CTEPH | Chronic old blood clots | Present—frequently missed |
Group 5 | Kidney disease, sarcoidosis, sickle cell | Present |
Groups 2 and 3 are the most common in India. Group 1 is rarer but has the most targeted drug treatments. Group 4 is the only one where complete cure through surgery is genuinely possible.
Giving a Group 2 patient drugs designed for Group 1 can cause harm. Getting the classification right is not a formality.
Can Young Adults Get This?
Yes, more often than many people realize.
Group 1 PAH predominantly affects women between 20 and 50. Research published in Heart India found the largest patient group in a major Indian PAH study was aged 31 to 40.
Young women with breathlessness and fatigue rarely get referred for echocardiography early—they cycle through anemia, thyroid, and anxiety investigations first.
Unrepaired congenital heart disease is another major cause in younger patients.
Being young does not protect against this. In India, being a young woman with unexplained breathlessness may actually increase the chance of delayed diagnosis.
How the Disease Develops Inside the Body
The blood vessels inside the lungs are normally soft and flexible, allowing blood to move through them easily.
In pulmonary hypertension, these vessels slowly become tighter and narrower. In India, many patients do not realize this damage is developing until symptoms become difficult to ignore.
Over time, the vessel walls thicken, and blood flow becomes harder. Small blood clots can also form inside narrowed vessels, making the pressure even worse.
As pressure inside the lungs keeps rising, the right side of the heart has to work much harder to push blood forward. At first, the heart manages. But after months or years of extra strain, it slowly becomes weak and enlarged.
If the condition continues untreated, the right side of the heart can eventually start failing.
Research from Johns Hopkins Medicine has shown that patients diagnosed earlier—before permanent damage develops—usually respond much better to treatment.
Diagnosis — What to Expect
Echocardiogram —
the essential first step. Estimates pulmonary artery pressure and shows right heart size and function. Painless, no radiation, under 30 minutes. This is the test every patient with unexplained breathlessness should have.
Right heart catheterization —
the gold standard. A thin tube guided through a vein directly measures pulmonary artery pressure inside the heart. Required before starting targeted therapy. There is no substitute for this when treatment decisions are being made.
ECG —
ECG can show right heart strain patterns, though it may be normal in early disease.
CT pulmonary angiography —
needed when chronic blood clots are suspected.
Six-minute walk test, blood tests, pulmonary function tests, chest X-ray —
Help grade disease severity and identify the underlying cause.
Quick Summary—What to Ask Your Doctor
- Do I need an echocardiogram for my breathlessness?
- Has my pulmonary artery pressure been checked?
- If my echo is abnormal, should I see a cardiologist or PH specialist?
- Do I need further testing, such as right heart catheterization?
Treatment—What to Actually Expect
Treatment depends on the type and severity of pulmonary hypertension.
Group 1 PAH has the most specific drug options. Medicines such as sildenafil, tadalafil, bosentan, and ambrisentan help relax or widen the pulmonary arteries. In many patients, doctors use a combination of medicines instead of relying on a single drug.
In India, long-term treatment can become expensive, especially when multiple medicines are needed together. Many patients also struggle with delayed specialist access and long travel distances for follow-up care.
For Groups 2 and 3, treatment focuses mainly on the underlying condition. This may include heart failure treatment, valve repair, CPAP therapy for sleep apnea, or oxygen support for chronic lung disease.
Group 4 CTEPH is different because surgery can sometimes remove old clots from the pulmonary arteries completely. In selected patients, this can significantly improve symptoms and survival.
Oxygen therapy is often used in severe pulmonary hypertension in Indians when blood oxygen levels remain too low, especially in advanced lung disease.
Lifestyle Changes That Help
Salt restriction matters more than most patients realize. Not just avoiding the salt shaker—processed foods, pickles, and packaged snacks all carry hidden sodium. Fluid retention adds work to an already-burdened right heart.
Gentle walking—regular, unhurried, not to the point of breathlessness. Stop before fatigue becomes heavy. Strenuous exercise without specialist guidance is not safe.
Stop all tobacco—cigarettes, bidis, and hookah. Every use damages pulmonary vessels.
CPAP for sleep apnea—non-negotiable if diagnosed. Using it every night is treatment.
Avoid high altitude without medical clearance. Even a hill station trip can worsen symptoms.
Daily weight monitoring — a gain of 1 kg or more in 24 hours usually means fluid accumulation. Call the doctor.
Living With This Condition
Living with pulmonary hypertension in Indians can be physically and emotionally exhausting over time.
Managing pulmonary hypertension in Indians long-term can be physically and emotionally difficult. There are good weeks and difficult weeks, and even simple daily activities may start requiring extra effort and planning.
Many patients go through a period of fear, frustration, or grief after diagnosis. That response is completely normal. Anxiety and low mood are also common, but they are not discussed enough during routine medical visits.
Support groups exist in India through Pulmonary Hypertension India—a patient-led initiative worth knowing about for anyone newly diagnosed.
Complications
Right heart failure is the most serious complication. When the right ventricle gives out, fluid accumulates rapidly. Medical emergency.
Arrhythmia—atrial fibrillation, particularly, as stretched heart chambers disrupt the electrical system.
Blood clots form more easily in sluggish pulmonary circulation.
Pregnancy carries very high risk. The demands of pregnancy can precipitate acute right heart failure in a patient with pulmonary hypertension. This must be discussed with a specialist before any decision is made.
Prognosis—Honest Picture
The outlook has improved substantially over the last 20 years.
Patients diagnosed early, started on appropriate treatment, and followed regularly at centers with PH expertise do significantly better than older data suggested was possible.
Modern treatment has significantly improved long-term survival in many patients compared with older historical data.
Group 4 patients who undergo successful surgery can achieve near-complete resolution of the condition.
The biggest predictor of good outcomes—across all groups—is how early the diagnosis is made. Not which drug is used first. How early.
When to See a Doctor
See a doctor if:
- Breathlessness has been getting worse for more than a few weeks
- Tiredness does not improve with rest
- Swelling in the feet or ankles keeps coming back
- You feel dizzy during walking or physical activity
Go to the emergency room immediately if you have:
- Severe breathlessness at rest
- Fainting during activity
- Chest pain that does not improve
- Blue or grey lips and fingertips
If someone in your close family has pulmonary hypertension, talk to a doctor even if you do not have symptoms. Some forms of pulmonary hypertension in Indians can run in families.
Frequently Asked Questions (FAQs)
Is this the same as regular high blood pressure?
No. Regular hypertension affects the main body arteries. This condition affects only the lung arteries. A normal arm blood pressure does not rule it out. Completely different systems, different tests, different treatments.
Why do more Indian women get this than men?
Group 1 PAH affects women three to four times more than men, most commonly between ages 20 and 50. The mechanism is still being studied — estrogen is thought to play a role. In India, this translates to young women with breathlessness and fatigue cycling through anemia and thyroid investigations for months before cardiac evaluation is considered.
Can it be cured?
Group 4 caused by chronic blood clots can often be cured with surgery. Other groups are managed long-term. With proper management, many patients live active lives for years after diagnosis.
Which test confirms it?
Right heart catheterization is the gold standard. Echocardiogram is the essential first screening step. Both are needed before treatment decisions are made.
Does air pollution cause this?
Chronic exposure to high particulate pollution—common in Indian cities—damages pulmonary vessel walls and contributes to risk over time. It is not the only cause, but it is a real contributing factor for urban Indians.
Is it genetic?
In Group 1 PAH, 15 to 20 percent of cases carry a genetic mutation—most commonly BMPR2. Family screening is recommended if a close relative has been diagnosed with PAH.
Is it mistaken for asthma?
Frequently. Both cause breathlessness and dry cough. The difference is asthma responds to inhalers, has identifiable triggers, and does not progress steadily. If breathlessness is not fully explained by asthma, cardiac investigation is needed.
Medical Disclaimer:
This article is for general educational awareness only. It does not constitute medical advice, diagnosis, or treatment. If you are experiencing symptoms described here, please consult a qualified cardiologist or pulmonologist without delay.
About the Author
Iraphan Khan, BSN, NP, is a Public Health Researcher and Healthcare SEO Strategist at RealMedVision. He creates medically accurate, evidence-based content for clinics and health brands.
Medically Reviewed By
Dr Praveen Verma, MBBS, MD — Diagnostic & Pathology
Dr Himanshu Morya MBBS — Clinical Accuracy & Patient Safety
Kalpna Singh Shekhawat BSN NP — Patient Care & Practical Accuracy
References & Sources:
- WHO — 2018 World Symposium on Pulmonary Hypertension Classification
- Mayo Clinic — Pulmonary Hypertension Diagnosis and Treatment
- Cleveland Clinic — Pulmonary Hypertension Patient Education
- Johns Hopkins Medicine — PH Research and Clinical Guidelines
- NIH MedlinePlus — Pulmonary Hypertension
- AIIMS India — Cardiology Department Protocols
- ICMR — Cardiovascular Disease Burden in India
- Pulmonary Circulation, Wiley — PH Care Delivery in India, 2022
- Heart India Journal — PAH in Indian Patients, 2023
- ESC/ERS Pulmonary Hypertension Guidelines, 2022
- Braunwald’s Heart Disease
- Hurst’s The Heart
- Rapid Interpretation of EKGs — Dale Dubin
- Dr. Vallerie McLaughlin, University of Michigan