shortness of breath specialist tests overview

Overview

Shortness of breath, also called dyspnea (dis-nee-uh), is the uncomfortable feeling that you can't get enough air. Specialist tests help doctors find the cause, such as a problem with your lungs, heart, or other parts of your body.

Yes, shortness of breath is a common symptom. Many people experience it at some point in their lives, often due to mild causes like exercise or anxiety.

It can affect people of all ages, but it is more common in older adults, people who smoke, those with long-term health conditions like asthma or heart disease, and people who are overweight or have a family history of lung or heart problems.

Symptoms

Common symptoms

• Feeling like you can't take a deep breath
• Breath that feels tight or heavy
• Getting out of breath easily during normal activities
• Wheezing (a whistling sound when breathing)
• Chest tightness or discomfort

Symptoms in children

• Breathing faster than usual (rapid breathing)
• Flaring nostrils when breathing
• Grunting sounds with each breath
• Difficulty feeding or drinking
• Tugging at the chest or neck muscles when breathing

Symptoms in older adults

• Less obvious breathlessness, often described as 'just feeling tired'
• Confusion or drowsiness, which can be a sign that the body is not getting enough oxygen
• Swelling in the ankles or legs (may point to heart problems)
• Needing to sleep sitting up to breathe comfortably

Causes

Main causes

• Lung conditions such as asthma, chronic obstructive pulmonary disease (COPD), pneumonia, or pulmonary embolism (blood clot in the lung)
• Heart conditions like heart failure, arrhythmia (irregular heartbeat), or coronary artery disease
• Anemia (low red blood cells), which reduces oxygen in the blood
• Anxiety or panic attacks
• Obesity, which puts extra strain on the lungs and heart

Risk factors

• Smoking or exposure to secondhand smoke
• Being overweight or obese
• Having a family history of lung or heart disease
• Age (risk increases as you get older)
• Exposure to air pollution, dust, or chemicals at work

When to see a doctor

See a doctor urgently if:

• Sudden, severe shortness of breath with no clear cause
• Breathlessness along with chest pain or tightness
• Shortness of breath after a choking episode or injury

Book a routine appointment if:

• Mild breathlessness that lasts for more than a few days
• Breathlessness that gets worse over time or limits your daily activities
• Waking up at night feeling breathless

Diagnosis

Your doctor will ask about your symptoms, medical history, and perform a physical exam. Then they may order one or more tests to find the cause. These tests are usually painless and done as an outpatient.

Tests that may be done

• Chest X-ray: a picture of your lungs and heart to check for infections, fluid, or other problems.
• Blood tests: a small sample of blood is taken to check for anemia, infection, or signs of heart strain.
• Pulmonary function tests (spirometry): you blow into a machine to measure how well your lungs work.
• Electrocardiogram (ECG): sensors on your chest record the electrical activity of your heart to check for heart problems.
• Echocardiogram: an ultrasound of your heart to see its structure and how well it pumps blood.
• CT scan (computed tomography): a detailed X-ray that creates cross-sectional images of your chest.
• Stress test: you exercise on a treadmill or take medicine to see how your heart and lungs respond to exertion.

What to expect at your appointment

Most tests are done in a clinic or hospital radiology department. You may be asked to wear comfortable clothing and avoid heavy meals or smoking before some tests. The doctor will explain each test and what you need to do. Afterwards, you can usually go home the same day.

Treatment

Treatment depends entirely on the cause of your shortness of breath. Your healthcare team will create a plan tailored to you. This may include medicines, lifestyle changes, therapy, or procedures.

Self-care at home

• Stop smoking and avoid secondhand smoke.
• Avoid triggers like dust, pollen, or strong smells if they make you breathless.
• Try pursed-lip breathing (breathe in through your nose, then blow out slowly through pursed lips) during episodes.
• Use a fan or cool air to help ease the feeling of breathlessness.
• Pace your activities and take rest breaks.

Medical treatments

Depending on the cause, treatment may include inhaled medications to open the airways, medications to reduce fluid buildup in the lungs (diuretics), blood thinners for clots, or oxygen therapy. For infections, your doctor may prescribe antibiotics. For anemia, iron supplements or other treatments may be given. Always follow your doctor's prescription and do not change or stop medicines without consulting them.

When is surgery considered?

In some cases, surgery may be needed, such as removing part of a damaged lung, repairing a heart valve, or placing a stent to open a blocked heart artery. Your specialist will discuss this with you if necessary.

Living with this condition

Living with shortness of breath can be challenging, but you can learn ways to manage it. Keep a log of when symptoms happen, how severe they are, and what you were doing. This helps your doctor adjust treatment. Use a schedule that balances rest and activity.

Lifestyle tips

• If you smoke, get help to quit.
• Maintain a healthy weight through diet and gentle exercise as advised by your doctor.
• Avoid exposure to air pollution and wear a mask if needed.
• Learn breathing techniques, such as diaphragmatic breathing, to help control breathlessness.

Diet and exercise

Eat a balanced diet rich in fruits, vegetables, and whole grains. Avoid heavy meals that can make you feel more breathless. Exercise, even if gentle, can strengthen your heart and lungs. A pulmonary rehabilitation program may be recommended, which includes supervised exercise and education.

Mental health and emotional wellbeing

Shortness of breath can cause anxiety and stress, which in turn can make breathing feel harder. It is important to address mental health. Talk to your doctor if you feel anxious, panicked, or depressed. Relaxation techniques, counselling, or support groups can help.

Prevention

You cannot always prevent shortness of breath, but you can reduce your risk. A healthy lifestyle, not smoking, managing chronic conditions like asthma and heart disease, and getting vaccinated can help.

Vaccines

Vaccines against the flu and pneumonia (pneumococcal vaccine) can prevent lung infections that cause shortness of breath. Ask your doctor if you are due for these.

Screening programmes

If you are at high risk (for example, a long-term smoker over 50), your doctor may recommend regular lung function tests or a low-dose CT scan to check for lung disease early.

Complications

If left untreated

• The underlying condition (such as heart failure or COPD) may worsen.
• Reduced quality of life and ability to do daily activities.
• Increased risk of hospitalisation or emergency visits.
• In severe cases, organ damage from low oxygen levels.

Long-term outlook

For most people, shortness of breath can be effectively managed once the cause is found and treated. With the right care and lifestyle changes, many people continue to lead active, fulfilling lives. Early diagnosis gives the best chance for good outcomes.

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