If you have sudden, severe shortness of breath, breathlessness with chest pain, blue or gray lips, confusion or fainting, call 911 now. The same applies to new breathlessness after surgery, a long flight or car ride, or with a swollen, painful leg, which can signal a blood clot in the lung. The Mayo Clinic lists these as reasons for emergency care, since they can reflect a heart attack or pulmonary embolism.
Most shortness of breath that brings people to our internal medicine office is not an emergency, but it is never something to ignore. It is easy to assume the problem is in the lungs, and often it is. Just as often the cause is the heart, the blood, or a combination of fitness, weight and several mild conditions adding up. Breathlessness can be the first sign of heart failure, a rhythm problem or anemia, so a careful evaluation looks at the whole picture rather than stopping at the first plausible answer.
We start by separating acute breathlessness, which comes on over hours or days, from chronic breathlessness that has crept up over weeks or months. That distinction guides how quickly we move and which tests come first.
Causes of shortness of breath
Among lung causes, asthma and COPD are the most common. Both narrow the airways and often come with wheezing, cough or chest tightness. Pneumonia and bronchitis cause acute breathlessness with cough and often fever. A blood clot in the lung causes sudden breathlessness, sometimes with sharp chest pain and a fast pulse, and is an emergency.
Heart causes are just as important. In heart failure the heart cannot pump well enough to keep up with the body's needs, and fluid backs up into the lungs. The National Heart, Lung, and Blood Institute notes that one of the first symptoms is often feeling short of breath after routine activities such as climbing stairs. Trouble breathing when lying flat, waking up breathless, and swelling in the feet and ankles point in the same direction. Weakened heart muscle (cardiomyopathy), valve disease, inflammation around the heart (pericarditis), coronary artery disease and heart rhythm problems such as atrial fibrillation can all cause breathlessness, sometimes as the only symptom.
Other common causes include anemia, which reduces the blood's ability to carry oxygen; deconditioning after illness or a long stretch of inactivity; excess weight, which increases the work of breathing; thyroid disease; and anxiety or panic, which cause real, uncomfortable breathlessness. We diagnose anxiety only after checking the physical causes, never as a shortcut.
How we evaluate shortness of breath at NYMD Center
The history often narrows the answer quickly: how long it has been going on, what level of activity brings it on, whether it is worse lying down, and whether it comes with cough, wheezing, chest pain, palpitations, leg swelling or weight change. We review your smoking history, workplace and home exposures, medications and prior heart or lung problems. The exam focuses on your heart and lung sounds, neck veins, legs and signs of fluid retention.
Pulse oximetry, a painless clip on the finger, measures your oxygen level at the visit. An ECG (EKG) is done in the office to look for rhythm problems, prior heart damage and strain on the heart. Blood work typically includes a complete blood count for anemia, kidney function and electrolytes, thyroid function, and a BNP level, a blood test that rises when the heart is under strain and helps sort heart causes from lung causes.
When the heart is in question, we arrange an echocardiogram, which uses ultrasound to show pumping strength, valves and the lining around the heart, and review the results with you. Breathing tests (spirometry), which measure how much air you can move and how fast, are arranged by referral when asthma or COPD is suspected. A chest X-ray, CT scan or stress testing is arranged when the findings point that way, and we refer to cardiology or pulmonology when specialist care is needed.
Treatment options
Because shortness of breath is a symptom rather than a diagnosis, treatment targets the cause, beginning with the least invasive steps that fit.
Lifestyle and risk factor changes
Stopping smoking is the single most useful step for lung health and helps the heart as well. Gradual, regular exercise reverses deconditioning, and weight loss reduces the work of breathing. These steps take effort and time but carry no procedural risk.
Medication for lung causes
Asthma and COPD are treated with inhalers that open the airways and reduce inflammation, along with a written plan for flare-ups. Pneumonia and other infections are treated according to their cause. Correct inhaler technique matters as much as the choice of medicine, so we check it.
Medication for heart causes
Heart failure is managed with medications that remove excess fluid, lower strain on the heart and, over time, improve its function, along with salt and fluid guidance. Rhythm problems are treated with medications that control rate or rhythm. These drugs need monitoring for side effects such as low blood pressure, dizziness or changes in kidney function.
Referral and advanced care
Some patients need a cardiologist or pulmonologist for procedures, pulmonary rehabilitation or supplemental oxygen. We coordinate these referrals and continue to follow you in the office.
What to expect at your visit
Plan on a conversation, an exam, a pulse oximetry reading, an ECG and usually a blood draw. Bring your medication list, any inhalers you use, and prior test results such as chest X-rays, echocardiograms or breathing tests. Many patients leave the first visit with a working diagnosis and a clear next step, such as an echocardiogram, breathing tests or a change in treatment. If you are having chest pain along with breathlessness, tell us when you call so we can advise you on where to be seen.
When to seek care urgently
Call 911 for shortness of breath that comes on suddenly and severely, breathlessness with chest pain or fainting, blue or gray lips or fingertips, new confusion or drowsiness, or breathlessness with a swollen, painful calf. Contact us promptly, the same day if possible, for breathlessness with swelling in the feet and ankles, trouble breathing when lying flat, a high fever with cough and chills, new wheezing, or breathlessness that is steadily getting worse.
Questions patients ask
How do I know if my shortness of breath is from my heart or my lungs?
You often cannot tell on your own. Wheezing, cough and a history of smoking or asthma point toward the lungs. Breathlessness when lying flat, waking up short of breath, and swelling in the ankles point toward the heart. Many people have both. An exam, ECG, blood tests including BNP, and often an echocardiogram and breathing tests help sort it out.
What tests will I need?
Most patients have a history, exam, pulse oximetry, an in-office ECG and blood work at the first visit. Depending on the findings we may arrange an echocardiogram to look at heart structure and function, breathing tests (spirometry) for asthma or COPD, a chest X-ray, or stress testing. Specialist referral is arranged when needed.
Can anxiety cause shortness of breath?
Yes. Anxiety and panic attacks commonly cause a real feeling of air hunger, often with a racing heart, chest tightness and tingling. Because heart and lung problems can feel similar, we check for physical causes first. When anxiety is the driver, we say so plainly and help you find treatment, which usually improves the breathing symptoms.
Is being short of breath when I climb stairs normal?
Some breathlessness with hard effort is normal, and it increases with age, weight and lower fitness. But breathlessness that is new, getting worse, or out of proportion to what you are doing deserves an evaluation, because it can be an early sign of heart failure, anemia, a rhythm problem or lung disease.
When should I call 911 for trouble breathing?
Call 911 for sudden severe shortness of breath, breathlessness with chest pain or fainting, blue or gray lips, confusion, or breathlessness with a swollen, painful leg, especially after surgery or long travel. These can signal a heart attack, blood clot in the lung or another emergency. Do not drive yourself.