CPAP Side Effects

If you have sleep apnea and were prescribed a CPAP machine, you may have noticed some of the CPAP side effects that come along with wearing it. Recognizing what these problems are can help you to find solutions so you can wear your CPAP comfortably and get a good night’s sleep. 

Common CPAP Side Effects

Although CPAP therapy is one of the most successful methods for treating and reducing the symptoms of sleep apnea, there are a host of CPAP side effects that may follow after constant use of sleep apnea equipment. If you wear a CPAP mask and use a CPAP machine, these issues might sound familiar to you.


This is the medical term for eating or swallowing air. This generally occurs when the CPAP pressure is too high for you and can result in gas and bloating.


Wearing a CPAP mask can sometimes cause discomfort when trying to sleep. The mask can feel bulky and constrictive, and the hose can get in the way of trying to sleep in positions other than your back. Exhaling can also be uncomfortable if the pressure of the sleep apnea equipment is too high.


Many people feel claustrophobic while wearing a CPAP mask because the mask fits snug around your nose. The feeling of claustrophobia can be even worse for those who wear a full-face mask that sets around your mouth and nose.

Mask Leak

If your CPAP mask does not fit properly or isn’t properly cleaned, it can cause leakage. When there is a leak, there is a high probability that your CPAP machine isn’t able to reach its set pressure.

Dry, Stuffy Nose or Nosebleeds

Having a dry or stuffy nose is a common side effect of CPAP because air from the machine is being blown into your airway. This constant flow of air can also cause nosebleeds to occur.

Skin Irritations

Because CPAP masks fit snug against your face and are worn repeatedly, your skin can become irritated. This CPAP side effect can result in skin irritations such as rash or pressure sores. 

Dry Mouth

Suffering from a dry mouth is yet another common CPAP side effect for those with a full-face mask, as well as patients with a nasal mask who breathe out of their mouths. 


If a CPAP machine or CPAP mask isn’t properly cleaned on a routine basis, infections, such as lung or sinus infections, can occur.


Although headaches are not a common CPAP side effect, they can occur if the machine’s pressure is set too high or if you have a blockage in your sinuses.

Lung Discomfort

Some patients who use CPAP therapy complain of a burning sensation in the lungs. This is often a result of dry or cold air being inhaled from the CPAP mask. This CPAP side effect can possibly be reduced by using warm humidification.


Some complain of dizziness after wearing a CPAP mask. While the mechanism for this symptom is not clearly known, some believe that this might be due to the pressure change in the middle ear. The symptom should be short lived if due to CPAP therapy.

Shortness of Breath

While another common CPAP side effect is the complaint of shortness of breath, this feeling is usually sensorial. It is merely the sensation of not getting enough air because a functional CPAP machine never reduces the amount of air that can be inhaled.

Even though there are side effects related to using sleep apnea equipment, it’s important to be compliant with continuing to wear it. Not using your CPAP mask and machine as prescribed can cause larger, more severe health problems such as fatigue, high blood pressure, heart arrhythmias, heart failure, heart attack, or stroke.

Woman confused about CPAP side effects

How to Prevent CPAP Side Effects

If you’re experiencing any of the CPAP side effects mentioned above, don’t give up on the treatment just yet. There are solutions to these common problems. Try these different strategies to reduce or completely halt your CPAP side effects.

Clean Your CPAP Regularly

Make sure that your CPAP mask and machine are clean. It is important to make cleaning your mask, tubing, and water chamber a regular habit to avoid any bacteria or fungi buildup. The CPAP mask and humidifier chamber should be cleaned daily with mild soap and water. On top of this, you should soak all of the parts in vinegar and water, using one part vinegar to three parts water. Follow this routine once a week. There are also sanitizing machines, like a CPAP cleaner, that you can purchase if you are having trouble keeping up with this cleaning schedule. 

Avoid Using Oily Products

Oily products like makeup or moisturizer can be a major cause of CPAP side effects. Remove any of these products from your face before applying your mask. Otherwise, the oil can build up on the mask if not cleaned daily.

Make Sure You Have The Proper Mask

CPAP masks are available as nasal masks, full-face masks, and nasal pillows because one type of mask isn’t suitable for everyone. Before choosing a mask, there are a few factors you should consider. Mouth breathing, claustrophobia, sleep position, and machine pressure are important areas to evaluate. These should be discussed with your doctor before choosing which type of mask you should be wearing.

Check Your Humidifier

If you’re having CPAP side effects relating to respiratory irritation, dry mouth, dry nose, or nosebleeds, check your humidifier to make sure it’s working properly. Also, as previously mentioned, make sure you’re cleaning it regularly.

Try Switching to Heated Tubing

Heated tubing warms the air traveling through the CPAP and can improve its temperature. The tube, filter, and mask are part of the CPAP supplies.

Consider Sinus Medication

If your sinuses are blocked, talk to your sleep doctor to see if you need a sinus medication to let your CPAP work more effectively and reduce your CPAP side effects.

Try Using Mask Barriers

Creating a barrier between the CPAP mask and your skin can help with skin irritations such as sores and rashes. There are barriers you can purchase that are sometimes made with gel or cloth. A hypoallergenic tape can also work to create a barrier.

Make Sure Your Strap is Secured

If your mask is strapped on too tight it can cause skin irritations. If it is too loose, it can cause a leak. Take the time to ensure your CPAP mask strap is secured properly to avoid any unnecessary CPAP side effects.

CPAP mask and machine

Adjusting CPAP Pressure to Avoid CPAP Side Effects

If the other methods don’t work to relieve your CPAP side effects, it may be time to adjust your CPAP machine’s pressure. Here are a few notes to remember when it comes to perfecting your CPAP pressure.

Make Sure You’re Using the Correct Pressure

Make sure the pressure on your CPAP machine is the pressure that was prescribed to you. If it is and you’re still having trouble with discomfort while exhaling, swallowing air, or feel the pressure may be too high, you may want to talk to your doctor to see if your pressure setting needs to change.

You May Need a New Pressure  

If you’ve gone through recent lifestyle changes such as quitting smoking or drinking, weight gain or loss, or changes to your underlying medical condition (such as diabetes), some of the original symptoms of OSA may reappear, due to residual sleep disorderd breathing.  These changes to your lifestyle or medical condition may require a new pressure setting for your CPAP or BiPAP.  With advances in technology, an FDA cleared OSA test that can be done in your home, with the results interpreted by a certified physician, remotely.  If you think you may be suffering from residual sleep disordered breathing, click here to find a home sleep apnea test provider.  

Try Using the Ramp on Your Machine

When you use the ramp on your sleep apnea equipment, your CPAP machine starts out at a lower pressure and gradually increases until it reaches your set pressure. Using this gradual technique can increase your comfort level, as well as help you get used to wearing your mask each time you put it on.

Always make sure to talk to your doctor before making any changes to your CPAP routine. Since the side effects of sleep apnea outweigh the CPAP side effects of using a CPAP mask and machine, it’s important to find a solution so you can wear your CPAP comfortably and consistently.

ASA Authors & Reviewers
Latest posts by ASA Authors & Reviewers (see all)
SoClean 3 - The Number 1 Device for Sleep Equipment Maintenance

182 thoughts on “CPAP Side Effects

  1. Barbara Reply

    I don’t have a sinus infection but I do suffer from sinus pain and headache. Can this be caused by the CPAP machine.?

  2. David Fratto Reply

    I have been using a CPAP machine over 15 years.
    Today I woke up, and after 10 minutes or so blood began to run out of my nose. I attempted to stem the flow, and when I blew out my nose, a huge glob came out.
    I have not ever had anything like that happen before. Suggestions?

  3. Nicolette Surico Reply

    I’ve had terrible arm and neck cramping after using a cpap. I stopped using it and the cramping is already going away. What is wrong????

  4. Robin Reply

    After using the c Pap machine I feel like my heart is racing and I’m dizzy and Shaky Then I had to go to the ER and my blood pressure was 214 and all my blood work was fine and my ekg was also fine What do I do?

    • Chris Engel Reply

      That may have been a panic attack. Do you have the full face mask?

  5. alice edgerton Reply

    I wear false teeth but take them out to sleep. Should I leave them in my mouth over night . My nose pillow slips down quit a bit before I fall asleep .

  6. Ronald Reply

    I have been on a CPAP device for around a year, and am experiencing wheezeng during the day and also at night. I s the device causing this?

  7. Carmen Reply

    I was trying my cpap for a couple of hours I removed my mask and stood up and felt my head and ears plugged and fainting
    Like sensation which scared me and now I don’t know what to do

  8. CPAP Accessories Reply

    Really helpful information on cpap treatment. Thanks for sharing

  9. Ron Reply

    Nose cushion used for two nights and it felt like I stopped breathing twice while nodding off…got a full face mask and I just felt like I was going to stop breathing again. Just about ready to chuck it. I’d rather lose weight than have to deal with all this baggage.

    • Brandon C Reply

      Try turning off the EPR, the feature that pauses the pressure to let you exhale. Sometimes it can cause it to freeze while you are having an apnea attack, and not provide you with the air you need. It makes it more uncomfortable but turning mine off helped me

  10. Becky McPike Reply

    I breathe through my mouth and nose…have an f30i cpap mask. My mouth opens and I awake with a terribly dry now I tape my mouth closed cpap mouth tape. I am noticing my chest aches during the day…is it from using mouth tape also?

  11. Patsy Reply

    My problem is my face sweats under the mask and itches keeping me awake. Any ideas?? I’m a mouth breather so I have to have a full face mask. I’d appreciate any help!

  12. Kelly Reply

    I love my CPAP! I sleep so much better with it. Inconveniences are minor–dry mouth & indentations on face in morning. But these are so minor as to be irrelevant. Quality of sleep is perfect.

  13. David Miller Reply

    Very informative blog on CPAP side effects. By reading this blog one can easily know the side effects of CPAP mask. Thanks for sharing it and keep sharing this kind of blog with us.

  14. John Reply

    I am very much to the same as nixie and breathing not so good waking up gasping for my breath and having to switch off machine. I am in touch with my cpap doctor and have an appointment very soon……john

  15. Michele B Wuetrich Reply

    I seem to be falling asleep faster without my CPAP machine. I’ve been using one for many years. Before CPAP I use to have dreams about being smothered that woke me up because I had stopped breathing. At the present time I fall asleep without the CPAP and don’t think I’m having any problems. I have lost some weight, but am still around 200. I’ve also been taking Allegra on a daily basis even though I’ve been tested twice 30 years apart and am told I don’t have allergies. Then why do I have constant problems with my sinuses? Nobody can give me answers. Is this something common with sleep apnea people?

    • David S Reply

      Have you looked into histamine intolerance? You can get those symptoms when your body turns amines from food into histamines. I developed extopics, fluctuating high blood pressure, runny nose, etc. from it. Taking DAO helps greatly if you find out you have it. Personally I take beef kidney pills 10 minutes before eating as a DAO replacement.

  16. nixkie Reply

    been on a CPAP for about a month. I have a full face mask and since starting my face feels really oily and at night I wake up feeling short of breath and at night several times on the chin section it feels like sweat leaking out of the mask but is dry.

Leave a Reply to Lori Cancel reply

Your email address will not be published.

Popular Sleep Topics