Sleep apnea (AP-ne-ah) is a common disorder in which you have one or more pauses in breathing or shallow breaths while you sleep.
Breathing pauses can last from a few seconds to minutes. They often occur 5 to30 times or more an hour. Typically, normal breathing then starts again, sometimes with a loud snort or choking sound.
Sleep apnea usually is a chronic (ongoing) condition that disrupts your sleep. You often move out of deep sleep and into light sleep when your breathing pauses or becomes shallow.
This results in poor sleep quality that makes you tired during the day. Sleep apnea is one of the leading causes of excessive daytime sleepiness.
Sleep apnea often goes undiagnosed. Doctors usually can't detect the condition during routine office visits. Also, there are no blood tests for the condition.
Most people who have sleep apnea don't know they have it because it only occurs during sleep. A family member and/or bed partner may first notice the signs of sleep apnea.
The most common type of sleep apnea is obstructive sleep apnea. This most often means that the airway has collapsed or is blocked during sleep. The blockage may cause shallow breathing or breathing pauses.
When you try to breathe, any air that squeezes past the blockage can cause loud snoring. Obstructive sleep apnea is more common in people who are overweight, but it can affect anyone. For example, small children may have enlarged tonsil tissues in their throats, which can lead to obstructive sleep apnea.
Central sleep apnea is a less common type of sleep apnea. This disorder happens if the area of your brain that controls your breathing doesn't send the correct signals to your breathing muscles. As a result, you'll make no effort to breathe for brief periods.
Central sleep apnea can occur in anyone. However, it's more common in people who have certain medical conditions or use certain medicines.
Central sleep apnea often occurs with obstructive sleep apnea, but it can occur alone. Snoring doesn't typically happen with central sleep apnea.
To read more about this topic, from this and related documents, and to see a video about sleep apnea, please see the National Heart, Lung and Blood Institute. You might also wish to see the HealthyNJ page on Sleep Disorders.