Shortness of Breath When Lying Down (Orthopnea)

Orthopnea is shortness of breath that occurs or becomes worse when lying flat and improves when sitting or standing. It can be associated with heart or lung conditions and should be evaluated when it is persistent, new or worsening.

Medically Reviewed
Dr. Nabila Zaheer Consultant Pulmonologist
Last Updated
Sep 11, 2026
Shortness of Breath When Lying Down (Orthopnea)
2 min estimated read

Overview

Orthopnea is a type of breathing difficulty that occurs when a person lies down. Some people may need to sleep with extra pillows or in a more upright position to breathe comfortably. Orthopnea can occur when lying down changes the distribution of blood and fluid in the body, increasing pressure on the lungs in certain conditions. It is commonly associated with heart failure but can also occur with lung diseases, obesity, sleep-related breathing problems and other medical conditions. New or worsening orthopnea should be medically evaluated because it may indicate an underlying heart or lung problem.

Causes

Possible causes include: Heart failure Fluid buildup in the lungs COPD Severe asthma Pneumonia Pulmonary edema Certain heart valve conditions Obesity Sleep apnea and other sleep-related breathing problems Pleural effusion Other heart or lung conditions

Risk Factors

Risk may be higher in people with: Heart disease Previous heart failure High blood pressure Heart valve disease Coronary artery disease Chronic lung diseases such as COPD Asthma Obesity Sleep apnea Kidney conditions that contribute to fluid retention A history of fluid accumulation

Diagnosis

A doctor will ask when the breathing difficulty occurs, whether it improves when sitting or standing, how many pillows are needed for sleep and whether other symptoms are present. Evaluation may include: Physical examination Pulse oximetry Blood tests Chest X-ray ECG Echocardiogram Lung function tests Sleep testing when appropriate CT or other imaging when clinically indicated

Treatment

Treatment depends on the underlying cause. Possible treatments include: Treating heart failure or other heart conditions Managing fluid retention according to medical advice Inhaled medicines for asthma or COPD Treatment of pneumonia or other infections Management of sleep apnea Weight management when appropriate Supplemental oxygen when medically indicated Other treatments directed at the underlying heart or lung condition Do not start or change diuretic, oxygen or other prescription treatment without medical advice.

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Prevention

Some causes of orthopnea may be reduced by: Following prescribed treatment for heart and lung conditions Monitoring and managing blood pressure Avoiding smoking and secondhand smoke Maintaining a healthy weight Following medical advice regarding fluid and salt intake when relevant Managing sleep apnea Taking prescribed medications regularly Seeking medical attention when breathing symptoms become worse

Complications

Persistent orthopnea can interfere with sleep and daily activities. More importantly, it may be a sign of an underlying heart or lung condition. If the underlying condition is severe or untreated, complications may include worsening breathing difficulty, poor sleep, reduced exercise tolerance and, in serious cases, respiratory or cardiac complications.

When to See a Doctor

Consult a doctor if you: Develop new shortness of breath when lying down Need more pillows than usual to sleep comfortably Wake up at night struggling to breathe Have progressively worsening breathing difficulty Notice swelling of the legs or ankles Experience unexplained fatigue or reduced exercise tolerance Have a known heart or lung condition and your breathing symptoms are worsening Seek emergency medical attention for severe or sudden breathing difficulty, severe chest pain, blue or grey lips or skin, fainting, confusion or rapidly worsening symptoms.

Conditions Related to This Symptom

Learn more about medical conditions that may cause or be associated with this symptom.

Asthma
Asthma

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Chronic Obstructive Pulmonary Disease (COPD)
Chronic Obstructive Pulmonary Disease (COPD)

Chronic Obstructive Pulmonary Disease (COPD) is a long-term lung disease that makes breathing difficult due to persistent…

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pneumonia
pneumonia

Pneumonia is an infection that causes inflammation of the air sacs (alveoli) in one or both lungs. The air sacs may fill…

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Pulmonary Embolism (PE)
Pulmonary Embolism (PE)

Pulmonary embolism (PE) is a life-threatening condition caused by a blood clot that blocks an artery in the lungs. Learn…

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Sleep Apnea (Obstructive Sleep Apnea - OSA)
Sleep Apnea (Obstructive Sleep Apnea - OSA)

Sleep apnea is a common sleep disorder in which breathing repeatedly stops and starts during sleep, leading to poor sleep…

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Frequently Asked Questions

Orthopnea is shortness of breath that occurs or becomes worse when lying flat and improves when sitting or standing. Some people may need extra pillows or an elevated sleeping position to breathe comfortably.

Orthopnea can be caused by heart failure, fluid buildup in the lungs, COPD, asthma, pneumonia, pulmonary edema, certain heart valve conditions, obesity, sleep apnea and other heart or lung conditions.

Lying down can change how blood and fluid are distributed in the body. In certain heart or lung conditions, this can increase pressure or fluid in and around the lungs and make breathing more difficult.

Orthopnea is commonly associated with heart failure, but it can also occur with lung diseases and other conditions. A medical evaluation is needed to determine the underlying cause.

Yes. COPD can cause breathing difficulties that may become more noticeable when lying down. People with COPD who develop new or worsening nighttime breathing problems should discuss them with a doctor.

Asthma can cause nighttime coughing, wheezing and breathing difficulties. If breathing becomes consistently worse when lying down, a doctor should evaluate whether asthma or another condition is contributing to the symptoms.

Needing several pillows or sleeping in a more upright position because breathing becomes difficult when lying flat can be a symptom of orthopnea. It may be associated with heart or lung conditions and should be medically evaluated if persistent or new.

A doctor may ask about when the breathing difficulty occurs, how many pillows you use and whether you have symptoms such as swelling, cough or chest discomfort. Tests may include pulse oximetry, blood tests, chest X-ray, ECG, echocardiogram, lung function tests or other investigations.

Treatment depends on the underlying cause. It may include treatment for heart failure or other heart conditions, inhaled medicines for asthma or COPD, treatment of infections, management of sleep apnea, fluid management or supplemental oxygen when medically indicated.

You should consult a doctor if you develop new or persistent shortness of breath when lying down, need more pillows than usual to sleep, wake up struggling to breathe, develop leg swelling or notice worsening symptoms.

Seek emergency medical attention for severe or sudden difficulty breathing, severe chest pain, blue or grey lips or skin, fainting, confusion or rapidly worsening breathing symptoms.

Some causes may be reduced by properly managing heart and lung conditions, taking prescribed medicines, avoiding smoking, maintaining a healthy weight, managing sleep apnea and seeking medical care when breathing symptoms become new or worse.

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