Is CPAP Therapy Making You Cough?

April 1, 2025 |

Obstructive Sleep Apnea Treatment & Tips

Key Takeaways

While CPAP therapy is an effective treatment option for sleep apnea, there is a chance that sleep apnea patients experience some side effects.
One common side effect of CPAP therapy is coughing, typically when therapy pressure settings are too high.
"CPAP Cough" can be improved in a number of ways, including using humidification, trying out a different mask, and more.

Introduction

CPAP therapy can improve sleep and help you stay healthy. But sometimes there can be side effects. A CPAP cough is not uncommon, especially when you first start CPAP therapy. Getting used to pressurized air and wearing a mask while you sleep can take some time. If side effects like a cough persist, you can take steps to make CPAP therapy more comfortable.

What is "CPAP Cough"?

You may notice a cough after starting your CPAP therapy. Using CPAP equipment can affect the dryness of nasal passages and cause congestion while you sleep. This can result in a cough either while you sleep or a cough that persists after you wake up.

Causes of CPAP Cough

A CPAP cough is typically caused by the pressurized air used during CPAP therapy. The air from a CPAP machine can leave nasal passages and throat dry, triggering a cough. In some instances, a dirty mask or tubing can lead to illness, which may also cause a CPAP cough.

Why Do I Keep Waiting Up Coughing with Sleep Apnea?

Before starting CPAP therapy, you may experience a cough due to sleep apnea. During a sleep apnea episode, the throat closes, triggering a cough that can wake you up. This type of cough is a symptom of sleep apnea and not related to the CPAP cough you may experience after you start therapy. Know the difference so you can seek the best solution.

Symptoms of CPAP Cough

A CPAP cough occurs usually during CPAP therapy or directly after a night of therapy. Look for these symptoms.

Persistent Cough

You may develop a cough that worsens during CPAP therapy.

Wheezing

You may hear a whistling sound while breathing during therapy.

Chest Pain or Tightness

Restricted breathing due to dry air may cause chest pain or tightness.

Sore Throat

A sore throat, especially when first waking up usually indicates irritation from dry air.

Nasal congestion

You may experience nasal congestion as if you have a cold after waking up, which can indicate a side effect of CPAP.

Runny Nose

A runny nose is common with new CPAP users adjusting to dry, pressurized air.

Does CPAP Improve Coughing at Night?

CPAP can improve coughing and gasping related to sleep apnea. However, the CPAP cough, which is related to CPAP equipment, may not be resolved by therapy. You can take some simple steps to eliminate the side effects like aCPAP cough.

How to Eliminate or Prevent Coughing After CPAP Therapy

Try Out Multiple CPAP Humidifier Settings

Humidifying the CPAP air can reduce the cough. Use a CPAP humidifier during therapy. You may need to adjust the settings to find the best one for you.

Shop CPAP Humidifiers

Test Different CPAP Mask Styles

Some CPAP masks are more beneficial for eliminating CPAP symptoms such as a cough. Try different types of masks to find one that provides more comfortable breathing. Full face CPAP masks are often the most effective for eliminating mouth breathing, which can contribute to a CPAP cough.

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Detect Other Potential Illnesses Causing a Cough

Your cough may not always be due to CPAP therapy. Be sure to rule out allergies or respiratory infections that may be causing the cough.

Treat Underlying Conditions

Addressing comorbid conditions such as gastroesophageal reflux disease (GERD) can also help reduce cough. Optimizing GERD management can decrease the reflux of stomach contents that may irritate the airway.

Use Nasal Saline Irrigation

Using nasal saline sprays, rinses, or moisturizers before and after CPAP use can help maintain mucosal hydration and reduce irritation, thereby decreasing the likelihood of cough.

Adjust CPAP Settings

Lowering the pressure settings, if in agreeance with your doctor, can reduce the airflow rate and associated upper airway irritation. This should be done under the guidance of a sleep specialist.

Keep Your CPAP Equipment Properly Maintained

CPAP equipment that is not clean can contribute to infection and illness, which can cause a cough. Be sure to follow a regular cleaning schedule for masks and hoses. Check your mask and hose for leaks and replace them if you find damage. Clean equipment can help prevent CPAP cough and other side effects.

Conclusion

While a CPAP cough can be annoying do not let it interrupt your CPAP therapy. Follow a few steps to resolve the issue. Determine the source of your cough, adjust equipment and therapy needs, and talk to your doctor. A simple solution can put you back on track for healthy and effective CPAP compliance—without the cough.

For assistance with your CPAP therapy, The CPAP Shop would be happy to help! Give us a call at 866-414-9700 today.

Dr. Kunal Agarwal, MD

Dr. Kunal Agarwal, MD, FAAFP, FAASM, DipABOM, is a highly accomplished board-certified physician specializing in Family Medicine, Sleep Medicine, and Obesity Medicine.